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8 August, 22:40

Vinny auto repair charges $75 an hour for labor plus the cost of parts. Mr sellners car was repaired and repaired $50 worth of parts and h hours of labor. The total cost, C, to repair the car is modeled by this function.

C (h) = 75h+50

The total cost to repair the car was $650. How many hours of labor were required?

Select the correct answer below.

A. 8hours

B. 8 2/3 hours

C. 9 1/3hours

D. 13 hours

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Answers (1)
  1. 8 August, 22:47
    0
    Set C (h) = 75h+50 = to 650 and solve for h, the number of hours the repair required:

    75h = 600 Dividing both sides by 75,

    h = 600/75 = 8 hours (answer)

    Are you sure you wanted to write " Mr sellners car was repaired and repaired"?
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