Question

a plumber charges $60 for a service call plus $55 for each hour she works. Write a function rule for the total bill for a plumbing job. what is the total bill for job that takes the plumber 3 hours of work?

Answer 1

cost = $60 + ($55 * (hours-1))

Answer 2

cost = $60 + ($55 * (2))

cost = $60 + ($110)

cost = $170

Answer 3

Maybe I read that the wrong way. If it's a $60 base charge, PLUS $55 per hour, then it's:

fn → cost = $60 + ($55 * (hours))

So:
cost = $60 + ($55 * (hours))
cost = $60 + ($55 * 3)
cost = $60 + ($165)
cost = $225