Math

QuestionEvaluate the function f(x)=2x+5f(x)=2x+5 for x=5,0,4,2,3x=5, 0, 4, -2, 3 and identify the true statements.

Studdy Solution

STEP 1

Assumptions1. The function is f(x)=x+5f(x)=x+5 . We need to find the value of the function for different values of xx and verify the given statements.

STEP 2

Let's start with statement A f(5)=15f(5)=15. To verify this, we need to substitute x=5x=5 into the function and calculate the result.
f(5)=2(5)+5f(5) =2(5) +5

STEP 3

Calculate the value of f(5)f(5).
f(5)=2(5)+5=10+5=15f(5) =2(5) +5 =10 +5 =15So, statement A is true.

STEP 4

Next, let's verify statement B f(0)=f(0)=. Substitute x=0x=0 into the function and calculate the result.
f(0)=2(0)+f(0) =2(0) +

STEP 5

Calculate the value of f(0)f(0).
f(0)=2(0)+5=0+5=5f(0) =2(0) +5 =0 +5 =5So, statement B is also true.

STEP 6

Now, let's verify statement C f(4)=13f(4)=13. Substitute x=4x=4 into the function and calculate the result.
f(4)=2(4)+5f(4) =2(4) +5

STEP 7

Calculate the value of f(4)f(4).
f(4)=2(4)+5=+5=13f(4) =2(4) +5 = +5 =13So, statement C is true as well.

STEP 8

Next, let's verify statement D f(2)=1f(-2)=1. Substitute x=2x=-2 into the function and calculate the result.
f(2)=2(2)+5f(-2) =2(-2) +5

STEP 9

Calculate the value of f(2)f(-2).
f(2)=2(2)+5=4+5=f(-2) =2(-2) +5 = -4 +5 =So, statement D is true.

STEP 10

Finally, let's verify statement f(3)=f(3)=. Substitute x=3x=3 into the function and calculate the result.
f(3)=2(3)+5f(3) =2(3) +5

STEP 11

Calculate the value of f(3)f(3).
f(3)=(3)+5=6+5=11f(3) =(3) +5 =6 +5 =11So, statement is true as well.
Therefore, all the statements A, B, C, D, and are true.

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