Question

Paul's plumbing charges a flat fee of $90 plus $40/h for plumbing job. Perfect pipes charges a flat fee of $60 plus $55/h for a plumbing job. A) Write the expressions to represent the total costs of a plumbing job each for company. Let "h" represent the time, in hours, of a plumbing job. B) Is the cost of a 3- hour-long plumbing job the same at both companies? Write and use an equation to find out.

Answer 1

for part A:
Paul's plumbing
40h + 90

perfect pipes:
55h + 60

Part B:
we will substitute h = 3 and find out
paul's:
40h + 90
when h = 3
210

for pipes:
55h+60
when h = 3
225

no not the same