Question

A plumber charges $15 per hour and a service fee of $40.

Which equation can be used to find y, the total amount she will charge for x hours of babysitting?
A y = 152-40
By=152 +40
(C) y=40x+15
Dy=40x-15

Answer 1

The correct answer is y=15x+40 because x is the amount of hours and she charges $15 an hour so 15x then no matter how long she’s working for she charges a flat service fee of $40 so put that together and it’s 15x+40.

Answer 2

C is your answer because Y=40x+15 make more sense than A,B and C