SOLUTION: Mr. Fixit charges a flat fee of $40 for any house call plus $15 per hour for each hour on the job. a) Write a linear function for the cost, C(x), of a repair if it takes x h

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Mr. Fixit charges a flat fee of $40 for any house call plus $15 per hour for each hour on the job. a) Write a linear function for the cost, C(x), of a repair if it takes x h      Log On


   

Question 1009371: Mr. Fixit charges a flat fee of $40 for any
house call plus $15 per hour for each hour on
the job.
a) Write a linear function for the cost, C(x),
of a repair if it takes x hours.
B)If the total cost of a repair was $175,
how many hours were spent on the job?

C)Graph the function
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
C(x)= 40+15x
-----------------------
when C(x)= 175:
40+15x= 175
15x= 135
x= 135/15
x= 9 hours