Question

A plumber charges $80 to come to your house plus $60 per hour of work. Write an expression and then solve to show how much the plumber charged for 3 hours of work.

Answer 1

Answer: see below

Explanation:

The charges is always at least $80 just for the plumber to show up. The, it increases by $60/hour.

We represent cost, c in dollars, as below.

part A --> c = 80 + 60h

where h is the number of hours.

For 3 hours work, c = 80 + 60(3) = 80 + 180 = $260

part B --> $260

I hope this helps.