An auto repair bill is $158 for parts and $35 for each hour of labor. Express the amount of the repair bill in terms of the number of labor

Question

I'm not really understanding question but I do know we have to write this into an variable expression.

Please explain how I will solve this.

Thank you very much!

Answer 1

158 = parts

35 = hour per labor

bill = repair bill of parts + hour each labor

total = 158 + 35*h

if you want to find h then

158 = 35h

h = 4.5, however they need to give you a total bill so you can do

total - 158 = 35*h

h = (total-158)/35

Answer 2

C(L) = 158 + 35L

where C is the cost of repairs in terms of labor

L = hours of labor

158=a fixed cost of $158 for parts

35 = the hourly cost of labor, $35 per hour

IF you know L, plug it into the equation and solve for C

or if you know the total bill, plug that in for C and solve for the hours of labor