Question

An auto repair shop charged $75/h for labor plus an additional $89 for parts. If the shop worked for 2 h, which equation represents the total repair cost C?

Answer 1

Well, your variable here is time, (h) and the output is Cost.

So think of h as x, and C as y

So we get the following: C = 75h + 89.

Now you can use whatever time to find the cost for that amount of time.