Question

An auto mechanic charges (C) an inibal fee of $50 and then $40 per hour. Which of the following linear functions represents this model if (h) represents hours?

C=40h +50

C=50h + 40

C = 90h

None of these choices are correct.

Answer 1

The answer is C=40h+50. This is because hours is the x, since it changes. 50 is just the entrance fee so you add it to the total cost.