Construct a boxplot for the given data. Include values of the 5 -number summary in all boxplots. The weights (in pounds) of 30 newborn babies are listed below. Construct a boxplot for the data set.
5.55.75.85.96.16.16.36.46.56.66.76.76.76.97.07.07.07.17.27.27.47.57.77.77.88.08.18.18.38.7
done to determine this.
(c) Employees at a large office building took a survey. The results show that those who began work earlier tended to drink less tea. which statement is most likely true?
There is no correlation between start time and amount of tea consumed.
There is a correlation between start time and amount of tea consumed. There may or may not be causation. Further studies would have to be done to determine this.
There is a correlation between start time and amount of tea consumed. However, there is no causation. This is because there is a decrease in the amount of tea consumed with an earlier start time.
Answer the questions below.
(a) A researcher measured the shoe size and reading ability of a large group of children. He found that, as shoe size increases, so does reading ability. What does his analysis show?
There is no correlation between shoe size and reading ability.
There is a correlation between shoe size and reading ability. There may or may not be causation. Further studies would have to be done to determine this.
There is a correlation between shoe size and reading ability. There is probably also causation. This is because there is an increase in reading ability with an increase in shoe size.
There is a correlation between amount of gasoline bought and price. There may or may not be causation. Further studles would have to be done to determine this.
(c) Ms. Anderson studied her chemistry students' homework and test scores. She found that students who completed more homework did not tend to earn higher or lower scores on the test. What should she conclude? There is no correlation between test score and amount of homework completed.
There is a correlation between test score and amount of homework completed. There is probably also causation. This is because there might be an increase in a student's test score with an increase in the amount of homework completed.
There is a correlation between test score and amount of homework completed. There may or may not be causation. Further studies would have to be done to determine this.
6. A large bathtub contains 425 gallons of water. After 5 minutes of draining, it has lost 32% of its volume of water.
(a) What percentage of the water remains in
(b) the tub after 5 minutes? Explain or justify. how many gallons of water remain after 5 minutes.
[-/2 Points]
DETAILS
MY NOTES
TGINTERALGH5 5.1.002. Fill in the blanks.
In the exponential expression xn,x is called the -- Select −⋯, and n is called the -- Select −Υ.
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e
Incorrect A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the range of the data.
\begin{tabular}{|c|c|}
\hline \multicolumn{2}{|c|}{\begin{tabular}{c}
Building \\
Toy Pieces
\end{tabular}} \\
\hline 178 & 63 \\
\hline 283 & 368 \\
\hline 368 & 63 \\
\hline 122 & 314 \\
\hline 283 & 127 \\
\hline 188 & 534 \\
\hline
\end{tabular}
Copy Data
The graph of y=x2 is the solid black graph below. Which function represents the dotted graph? Answer
y=(−x)2+3y=−(x+3)2
Submit Answer
8
y=(−x)2−3y=−(x−3)2
וור
13
Beth says that the equation x + 3 = 5 has only one solution. Is Beth correct? Use the number
line to help explain your reasoning.
0
+
2
3
4
95
+4
13
+
16
6
7
8
9
10
same quantity
Lesson 22: Solving Equations 213
Suner Teacher
Geoffrey is looking at two datasets, each of which has the same mean. How can he determine which of the two datasets has less variability? (1 point)
The dataset with less variability has a smaller deviation.
The datasets have the same variability because their means are the same.
The dataset with less variability has a greater deviation.
The dataset with more pieces of data will have less variability.
An objective function and a system of linear inequalities representing constraints are given. Complete parts a. through c. Objective Function z=3x−2y
Constraints
⎩⎨⎧3≤x≤7y≥2x−y≥−4
b. Find the value of the objective function at each corner of the graphed region.
□
(Use a comma to separate answers as needed.)
ike, Pedro, and Harry picked 10, 6, and 3 bushels of peaches, respectively. Find the following ratios of the
quantities picked. Expres 13. Pedro to Harry 14. Ike to Pedro 15. Ike to Harry 16. Harry to Pedro 17. Pedro to Ike and Harry 18. Ike to Pedro and Harry
The height, h, in centimetres, of a piston moving up and down in an engine cylinder can be modelled by the function h(t)=18sin(50πt)+18, where t is the time, in seconds. What is the piston's minimum height?
a) -18 cm
b) 9 cm
c) 0 cm
d) 18 cm
Fill in the blanks.
A second-degree polynomial function is also called a □ function. A third-degree polynomial function is also called a □ function.
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```latex
\textbf{Foundations of Mathematics 11} \\
\textbf{5.3 Standard Deviation Part II} \textbf{Analyze Data and Make Decisions} \textbf{Example 1.} The coach of a varsity girls' basketball team keeps statistics on all the players. Near the end of one game, the score is tied and the best starting guard has fouled out. The coach needs to make a substitution. The coach examines the field goal stats for five guards on the bench in the last 10 games. \begin{enumerate}
\item[(a)] Calculate the mean and the standard deviation of the first four player's shooting percentage.
\end{enumerate} \begin{tabular}{|c|c|c|}
\hline
Player & Mean & Standard Deviation \\
\hline
Anna & 36.7 & 5.88 \\
\hline
Patrice & & \\
\hline
Morgan & & \\
\hline
Paige & & \\
\hline
Star & 36.3 & 3.348 \\
\hline
\end{tabular} Anna (36.7)standaro Deviation10346=5.88 The user took a picture with their phone and the text was extracted above. The user then had a dialogue with an AI Assistant to help clarify the instructions. \textbf{Dialogue Transcript:} \textbf{assistant:} Hello! It seems that we have a part of a math problem, but some information is missing. We have the mean and standard deviation for Anna's and Star's shooting percentages, but we don't have the data or results for Patrice, Morgan, and Paige. Could you please provide the shooting percentages for these players or specify what calculations you need help with? Once I have that information, I'll be able to assist you further! \textbf{user:} I need to find the mean and standard deviation for each name \textbf{assistant:} Great! To calculate the mean and standard deviation for each player's shooting percentages, I'll need the individual shooting percentages for each game for Patrice, Morgan, and Paige. Could you provide those? If you have the shooting percentages for each of the 10 games for each player, we can proceed with the calculations. If you don't have them, any additional detail would be helpful! \textbf{user:} Ok Patrice has a 364 shooting percentage \textbf{assistant:} Thank you for providing Patrice's total shooting percentage. However, I suspect the value you provided might be a sum of shooting percentages or it might be an average per a certain number of games. To calculate the mean and standard deviation, we typically need individual data points (i.e., shooting percentages for each game). If you happen to have these details, please share them. If Patrice's "364" represents a combined total or already a mean of 10 game percentages, I can guide you on how to calculate the standard deviation using individual percentages if available. If not, we may need to interpret the data a bit differently. Let me know how you'd like to proceed! \textbf{user:} I uploaded an image and extracted the following: \begin{verbatim}
* Text: coach examines the field goal stats for five guards on the bench in the last
\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|l|}
\hline Player & \multicolumn{1}{|c|}{ Field Goal Percent in Last 10 Basketball Games } \\
\hline Anna & 36 & 41 & 43 & 39 & 45 & 27 & 40 & 37 & 31 & 28 \\
\hline Patrice & 36 & 39 & 36 & 38 & 35 & 37 & 35 & 36 & 38 & 34 \\
\hline Morgan & 34 & 41 & 38 & 37 & 48 & 19 & 33 & 43 & 21 & 44 \\
\hline Paige & 34 & 35 & 33 & 35 & 33 & 34 & 33 & 35 & 34 & 33 \\
\hline Star & 41 & 33 & 39 & 36 & 38 & 36 & 29 & 34 & 38 & 39 \\
\hline
\end{tabular}
\end{verbatim} Based on the extracted text and the dialogue transcript, please rewrite the math problem that the Assistant is helping the user to solve. Rewrite it in LaTeX. Do not omit any portion of the original problem. When you have finished writing the problem, type the special keyword:
A 17 foot ladder is leaning against a wall. If the top slips down the wall at a rate of 2ft/s, how fast will the foot be moving away from the wall when the top is 16 feet above the ground? The foot will be moving at 7.5ftt/s.
A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the median of the data.
\begin{tabular}{|c|c|}
\hline \multicolumn{2}{|c|}{\begin{tabular}{c}
Building \\
Toy Pieces
\end{tabular}} \\
\hline 185 & 70 \\
\hline 290 & 375 \\
\hline 375 & 70 \\
\hline 129 & 321 \\
\hline 290 & 134 \\
\hline 195 & 233 \\
\hline
\end{tabular} Copy Data Answer
BETA
KeypI
Keyboard Short
Use the graph below to answer the questions provided. What is the slope of the line? What is the y intercept of the line? Write the equation that represents the graph in slope intercept form?
Use the results from a survey of a simple random sample of 1142 adults. Among the 1142 respondents, 69% rated themselves as above average drivers. We want to test the claim that more than 2013 of adults rate themselves as above average drivers. Complete parts (a) through (e).
A. This statement seems to suggest that with a low P-value, the null hypothesis has been proven or is supported, but this conclusion cannot be made.
B. This statement seems to suggest that with a high P-value, the null hypothesis has been proven or is supported, but this conclusion cannot be made.
C. This statement seems to suggest that with a high P-value, the alternative hypothesis has been proven or is supported, but this conclusion cannot be made.
D. This statement seems to suggest that with a high P-value, the alternative hypothesis has been rejected, but this conclusion cannot be made.
e. Common significance levels are 0.01 and 0.05 . Why would it be unwise to use a significance level with a number like 0.0432 ?
A. A significance level with more than 2 decimal places has no meaning.
B. Choosing a more specific significance level makes it more difficult to reject the null hypothesis.
C. Using a significance level to more decimal places makes calculations of P -values more difficult.
D. Choosing such a specific significance level could give the impression that the significance level was carefully chosen to reach a desired conclusion.
The table shows information about three stars. All of the stars have similar actual brightnes
\begin{tabular}{|l|c|}
\hline Name of star & Distance from Earth (in light-years) \\
\hline 18 Scorpii & 46 \\
\hline Sun & 0.000016 \\
\hline Kepler-452 & 1,400 \\
\hline
\end{tabular} Order the stars by how bright they look from Earth.
looks dimmest from Earth Sun Kepler-452 18 Scorpif
looks brightest from Earth
The numbers of students in the 9 schools in a district are given below.
(Note that these are already ordered from least to greatest.)
212,288,290,292,301,325,333,334,388
Send data to calculator Suppose that the number 212 from this list changes to 329 . Answer the following.
\begin{tabular}{|c|c|}
\hline (a) What happens to the mean? & It decreases by □
It increases by □
It stays the same. \\
\hline (b) What happens to the median? & It decreases by □
It increases by □
It stays the same. \\
\hline
\end{tabular}
What is the prime factorization of each expression? A) 8xy12x=8⋅x⋅y=12⋅x
B)
8xy=1⋅8⋅x⋅y12x=1⋅12⋅x
C)
8xy=2⋅4⋅x⋅y12x=2⋅6⋅x D) 8xy12x=2⋅2⋅2⋅x⋅y=2⋅2⋅3⋅x
Question 23 (1 point)
A Ferris wheel starts spining at t=0s and stops at t=12s. If the Ferris wheel made 5 loops during that time, what is k (horizontal stretch/compression?
a) 182π
b) 52π
c) 65π
d) 2π
Question 1 (2 points)
Given the following sine function,
f(x)=2sin(πx)+1
determine the information below. Enter your answers as integers (no decimals are needed). Amplitude =□
A Midline at y=□
A Period =
A
y-intercept (enter a coordinate point with brackets and no spaces):
□ A Domain (enter an interval):
□ A Range (enter an interval):
□
Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.19 and a standard deviation of 1.49 . Using the empirical rule, what percentage of American women have shoe sizes that are no more than 11.17 ? Please do not round your answer.
\begin{tabular}{lllll}
\hline Time & Oral & Intravenous & Urine & Stool \\
\hline 0800 & 360 ml & & \\
\hline 0900 & 120 ml & 250 ml & 400 ml & 1 \\
\hline 1100 & 120 ml & & \\
\hline 1200 & 240 ml & & \\
\hline 1300 & & 150 ml & \\
\hline 1400 & 120 ml & & \\
\hline 1500 & & & \\
\hline
\end{tabular} The nurse calculates the client's intake and output for the shift (above). Calculate the client's fluid balance, in milliliters, for the 8 -hour shift. Record your answer using a whole number.
410
Question
Graph the following function:
y=21cot(3x+43π)+1 Drag the movable black point to set the left vertical asymptote and shift the function, the red point to set the right vertical asymptote (thereby setting the period of the function), and the blue point at the correct set of coordinates. Note that the two asymptotes can be moved independently of each other and that only one period of the function is shown. Provide your answer below:
Search
An air conditioner cools a home when the outside temperature is about 78 EdegF. During the summer you can model the outside temperature in degrees Fahrenheit using the function f(t)=72−9cos(121πt) where t is the number of hours past midnight. During what hours is the air conditioner cooling the home? Round the hour to nearest tenth. Time format is a 24 hour clock, please pay attention to notes beside answer boxes (for auto-grading purposes). The air conditioner comes on approximately □ hours after midnight or
□ A.M. (enter answer as h:mm *do not put a zero in front of the hour for answers like: 3:25, do NOT enter as 03:25) By the symmetry of the graph, it goes off about □ hours before midnight or □ P.M. (enter answer as hh:mm *for an answer like 7:15 pm enter using 24 hour format as: 19:15)
Let
f(x)=(x+2)2 Find a domain on f that will make x=f(y) a function. Write your answer in Setbuilder Notation.
{x∣x≥□,x∈R} Find the inverse of f restricted to this domain
x=f(y)=□
A system of equations is given in which each equation is written in slope-intercept form. Determine the number of solutions. If the system does not have one unique solution, state whether the system is inconsistent or whether the equations are dependent.
y=31x+7y=3x−71
The system has one solution.
The system has no solution, }.
The system is inconsistent.
The equations are dependent.
The system has infinitely many solutions.
The system is inconsistent.
The equations are dependent.
The height, h, in metres, above the ground of a car as a Ferris wheel rotates can be modelled by the function h(t)=16cos(120πt)+18, where t is the time, in seconds. How fast does the wheel rotate?
a) 240πrad/s
b) 120πrad/s
C) 120rad/s
d) 240rad/s
Part 4 of 4 Soon after the euro was introduced as a currency in Europe, it was widely reported that someone had spun a euro coin 250 times and gotten he coin. Complete parts a) through c) below.
a) Estimate the true proportion of.heads. Use a 90% confidence interval. Don't forget to check the conditions first. Are the conditions satisfied?
A. The 10% Condition and the Success/Failure Condition are both met. The Randomization Condition is not met.
B. The Randomization Condition and the 10% Condition are both met. The Success/Failure Condition is not met.
C. The Randomization Condition and the Success/Failure Condition are both met. The 10% Condition is not met.
D. The Independence Assumption is not plausible. The 10% Condition is not met.
E. The Randomization Condition is met. Neither the 10% Condition nor the Success/Failure Condition are met.
F. All necessary assumptions and conditions are met. The 90\% confidence interval is ( 0.468,0.572 ).
(Use ascending order. Round to three decimal places as needed.)
b) Does your confidence interval provide evidence that the coin is unfair when spun? Explain. Since 0.50 is
□ within the interval, there □ evidence that the coin is unfair when spun.
c) What is the significance level of this test? Explain. The significance level is α=□ . The test is a(n) □ test based on the 90\% confidence interval above.
(Type an integer or a decimal.)
A certain species of animal has a 31 probability of any one offspring being male and a 32 probability of any one offspring being female. Fill in the remaining probabilities on the tree diagram and use that information to find the probability that an adult female of the species produces three offspring that are all females, given that the first is a female. Choose the correct tree below.
A.
example
Get more help -
Final check
Use a graphing calculator to find the determinant of the matrix.
⎣⎡3−198−124−36−32−2110−10553139⎦⎤□
Determine whether the matrix has an inverse, but don't calculate the inverse.
The matrix has an inverse.
The matrix does not have an inverse.
13. There are 264 children going on a field trip. Are 5 buses enough if each bus holds 52 children? Tell how you decided. Think about what information in the problem you need to compare.
13. There are 264 children going on a field trip. Are 5 buses enough if each bus holds 52 children? Tell how you decided. Think about what information in the problem you need to compare.
14. Higher Order Thinking Ginny earned $49.50 for 6 hours of gardening and $38.60 for 4 hours of babysitting. For which job did she earn more money per hour? How much more per hour did she earn? Explain how you found the answers.
Which of the following statements about correlation is true? Choose the correct answer below.
A. We say that there is a negative correlation between x and y if the x-values increase as the corresponding y-values increase.
B. We say that there is a positive correlation between x and y if the x-values increase as the corresponding y-values increase.
C. We say that there is a positive correlation between x and y if there is no distinct pattern in the scatterplot.
D. We say that there is a positive correlation between x and y if the x-values increase as the corresponding y-values decrease.
Given the rational function f(x)=x2−2xx2−5x+6 find any point(s) of discontinuity of the function.
x=3x=2x=0,x=2x=0x=3,x=2
There are no points of disconinuity
12.1 HW
Part 3 of 5
Points: 0 of 1 The data from car crash tests for four different vehicle size categories (Small, Midsize, Large, and SUV) with measured amounts of left leg femur force (kN) results in the following Minitab display. Using a 0.05 significance level, test the claim that the four vehicle size categories have the same mean force on the femur of the left leg. Does size of the car appear to have an effect on the force on the left femur in crash tests? Determine the null hypothesis.
H0:μ1=μ2=μ3=μ4 Determine the alternative hypothesis.
H1 : At least one of the means is different from the others
Determine the test statistic.
The test statistic is □
(Round to two decimal places as needed.)
Clear all
Check answer
12.1 HW
Question 28, 12.1.9-T
Part 3 of 6
Points: 0.25 of 1 Pages were randomly selected from one book each from authors A, B, and C. The accompanying table shows the ease-of-reading scores for those pages. Use a 0.05 significance level to test the claim that pages from books by those three authors have the same mean ease-of-reading score. Given that higher scores correspond to text that is easier to read, which author appears to be different, and how is that author different? Click the icon to view the data table of the ease-of-reading scores. Determine the null hypothesis.
H0:μ1=μ2=μ3 Determine the alternative hypothesis.
H1 : At least one of the means is different from the others
Determine the test statistic.
The test statistic is □□.
(Round to two decimal places as needed.) Ease-of-Reading Scores
\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|}
\hline A & 58.9 & 73.8 & 73.7 & 64.1 & 72.3 & 89.1 & 43.1 & 76.4 & 76.6 \\
\hline B & 85.9 & 84.4 & 79.3 & 82.2 & 80.2 & 84.5 & 79.1 & 70.5 & 78.1 \\
\hline C & 69.2 & 64.2 & 71.4 & 71.2 & 68.4 & 51.1 & 72.2 & 74.4 & 52.3 \\
\hline
\end{tabular} Print
Done
Question 20 (1 point)
The graph of y=cosx can be obtained by translating the graph of y=sinx
a) 4π rad to the left
b) 2π rad to the left
c) 4π rad to the right
d) 2π rad to the right
Consider the topic of correlation introduced in Section 11.1 and then respond to the scenario and questions below. As part of your response, please explain what correlation is and why two variables might be described as having a negative correlation. Age and education: A survey of U.S. adults showed that there is a negative correlation between age and education level. Does this mean that people become less educated as they become older? Why or why not? Please respond using complete sentences. Your first post must include your response to the items above, but you are welcome to post additional thoughts after reading the responses of your classmates (worth 70 points). You should also respond to the postings of at least two of your classmates (worth 30 points total). When responding to classmates, use something from their post to comment on. Generic responses such as "good job" or "l agree with your post" are not worth full credit.
Stella solves the following system of equations using the substitution method.
y=−4x−65x−y=10 What is the single-variable equation she solves after substituting?
5x−4x−6=105x−(−4x−6)=105x+10=−(4x−6)5x+10=−4x−6
Nathan solves the following system of equations using the elimination method.
−2x+3y=64x−6y=−12 He chooses to eliminate the variable x.
Which statement correctly describes his process and solution?
Nathan multiplies −2x+3y=6 by 2 and then subtracts the equations. He finds the result is a contradiction, so there is no solution.
Nathan multiplies −2x+3y=6 by 2 and then adds the equations. He finds the result is an identity, so there are infinitely many solutions.
Nathan multiplies −2x+3y=6 by 2 and then adds the equations. He finds the result is a contradiction, so there is no solution.
Nathan multiplies −2x+3y=6 by 2 and then subtracts the equations. He finds the result is an identity, so there are infinitely many solutions.
Tormin
un
Question 9 of 10 (i) point) I Question Attempt 2 of Unilmied Fast reactions: In a study of reaction times, the time to respond to a visual stimulus (x) and the time to respond to an auditory stimulus ( y ) were recorded for each of 8 subjects. Times were measured in thousandths of a second. The results are presented in the following table.
\begin{tabular}{cc}
\hline Visual & Auditory \\
\hline 191 & 169 \\
203 & 206 \\
201 & 197 \\
188 & 193 \\
228 & 209 \\
161 & 159 \\
176 & 163 \\
178 & 201 \\
\hline
\end{tabular}
Send data to Excel The least-squares regression line y^=b0+b1x=46.9658+0.7348x and Σ(x−xˉ)2=2915.5000 are known for this data. Construct a 95% confidence interval for the slope. Round the answers to at least four decimal places.
Question 9 of 10 (1 point) I Question Attempt 3 of Unlimited Fast reactions: In a study of reaction times, the time to respond to a visual stimulus (x) and the time to respond to an auditory stimulus ( y ) were recorded for each of 7 subjects. Times were measured in thousandths of a second. The results are presented in the following table.
\begin{tabular}{cc}
\hline Visual & Auditory \\
\hline 161 & 159 \\
176 & 163 \\
178 & 201 \\
188 & 193 \\
201 & 197 \\
203 & 206 \\
211 & 189 \\
\hline
\end{tabular}
Send data to Excel The least-squares regression line y^=b0+b1x=51.2341+0.7203x and Σ(x−xˉ)2=1895.4286 are known for this data. Construct a 95% confidence interval for the slope. Round the answers to at least four decimal places. The 95% confidence interval is □<β1<□ 1.
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BSAD/MATH 2170 Applied Statistics - Marquis (1)
Haley Stone
Homework: 10.1 Correlation
Question 6, 10.1.1
HW Score: 37.88%,8.33 of 22 points
Part 2 of 3
Points: 0.33 of 1
Save Question list Media 3 Question 1 Question 2 Question 3 Question 4 Question 5 Twenty different statistics students are randomly selected. For each of them, their body temperature (∘C) is measured and their head circumference (cm) is measured.
a. For this sample of paired data, what does r represent, and what does ρ represent?
b. Without doing any research or calculations, estimate the value of r.
c. Does r change if body temperatures are converted to Fahrenheit degrees?
A. r is a statistic that represents the proportion of the variation in head circumference that can be explained by variation in body temperature, and ρ is a parameter that represents the value of the linear correlation coefficient that would be computed by using all of the paired data in the population of all statistics students.
B. r is a statistic that represents the value of the linear correlation coefficient computed from the paired sample data, and ρ is a parameter that represents the value of the linear correlation coefficient that would be computed by using all of the paired data in the population of all statistics students.
C. r is a statistic that represents the value of the linear correlation coefficient computed from the paired sample data, and ρ is a parameter that represents the proportion of the variation in head circumference that can be explained by variation in body temperature.
D. r is a parameter that represents the value of the linear correlation coefficient that would be computed by using all of the paired data in the population of all statistics students, and ρ is a statistic that represents the value of the linear correlation coefficient computed from the paired sample data.
b. Select the correct choice below and fill in the answer box to complete your choice.
(Type an integer or a decimal rounded to one decimal place as needed.)
The value of r is estimated to be □ because it is likely that body temperature and head circumference are strongly positively correlated.
B. The value of r is estimated to be □ , because it is likely that body temperature and head circumference are strongly negatively correlated.
C. The value of r is estimated to be □ , because it is likely that there is no correlation between body temperature and head circumference.
x/ Question 6
2. Miguel is comparing the probabilities of two spinners. Select all the true statements that Miguel made.
(A) Spinner A is twice as likely to land on 1 as spinner B is.
(B) The probability that spinner B lands on an odd number is 21.
(c) The probability that spinner A lands on 2 is 41.
(1) Spinner A is not a fair spinner.
Spinner A and spinner B are equally likely to land on an odd number.
cond Attempt Personalized
Question 11, 5.1.69
Part 1 of 9
Points: 0 of 13 For the polynomial function below: (a) List each real zero and its multiplicity. (b) Determine whether the graph crosses or touches the x-axis at each x-intercept. (c) Determine the maximum number of turning points on the graph. (d) Determine the end behavior; that is, find the power function that the graph of f resembles for large values of ∣x∣.
f(x)=−9x2(x2−2)
(a) Find any real zeros of f . Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The real zero(s) of f is/are □ .
(Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.)
B. There are no real zeros.
A person has a taco stand. They have found that their daily costs are approximated by C(x)=x2−20x+330, where C(x) is the cost, in dollars, to sell x units of tacos. Find the number of units of tacos they should sell to minimize costs. What is the minimum cost? The person should sell □ units of tacos to minimize the costs. The minimum cost is $□ .
(Simplify your answers. Type integers or fractions.)
Consider a function f(x)=−3x+a+2. c) In the space below, determine an expression representing the domain and range of f(x). Do not provide the full form, provide the inequality portions only! For example, your domain could be x<5 and your range could be y≥−75. D: □ R: □ d) In the space below, determine an expression representing the x-intercept of f(x).
state the x-coordinate only.
x=□
Find the mean of the given frequency distribution and create a relative frequency histogram. Class intervals and frequencies are: 0-5 (146), 5-10 (178), 10-15 (217), 15-20 (223), 20-25 (198), 25-30 (140), 30-35 (80).
Find the bubble production rate at 40 cm distance from light, based on the pattern in the data: Distance (cm): 10, 20, 30, 40, 50
Rates (bubbles/min): 40, 20, 10, *, 3.