Math

QuestionAn airplane flies 3000 miles at 550 mph. Cost per passenger is C(x)=150+x25+32,000xC(x)=150+\frac{x}{25}+\frac{32,000}{x}. Find cost with 50 mph headwind.

Studdy Solution

STEP 1

Assumptions1. The airspeed of the airplane is550 miles per hour. . The cost function is given by C(x)=150+x25+32,000xC(x)=150+\frac{x}{25}+\frac{32,000}{x}, where xx is the ground speed (airspeed ± wind).
3. The wind is acting as a headwind, which means it is opposing the airplane's motion, so it will decrease the ground speed.
4. The speed of the headwind is50 miles per hour.

STEP 2

We need to find the ground speed first. Since the wind is a headwind, it will decrease the ground speed. We can calculate the ground speed by subtracting the wind speed from the airspeed.
x=AirspeedWindspeedx = Airspeed - Wind\, speed

STEP 3

Now, plug in the given values for the airspeed and wind speed to calculate the ground speed.
x=55050x =550 -50

STEP 4

Calculate the ground speed.
x=55050=500x =550 -50 =500

STEP 5

Now that we have the ground speed, we can substitute this value into the cost function to find the cost per passenger.
C(x)=150+x25+32,000xC(x)=150+\frac{x}{25}+\frac{32,000}{x}

STEP 6

Plug in the value for the ground speed into the cost function.
C(500)=150+50025+32,000500C(500)=150+\frac{500}{25}+\frac{32,000}{500}

STEP 7

Calculate the cost per passenger.
C(500)=150+20+32,000500C(500)=150+20+\frac{32,000}{500}

STEP 8

Continue to calculate the cost per passenger.
C(500)=170+32,000500C(500)=170+\frac{32,000}{500}

STEP 9

Continue to calculate the cost per passenger.
C(500)=170+64C(500)=170+64

STEP 10

Calculate the final cost per passenger.
C(500)=170+64=$234C(500)=170+64 = \$234The cost per passenger with a head wind of50 miles per hour is $234.

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