Question

Joe and Mike each own their own plumbing repair company. The total labor costs c for a repair that takes h hours are listed in the tables.
Joe's Plumbing Mike's Plumbing
H C H C
1 60 1 50
2 80 2 75
3 100 3 100
4 120 4 125
5 140 5 150
6 160 6 175
Which statement is not true?

Answer 1

A. Mike’s plumbing is cheaper for a two-hour repair.
B. A three hour job cost the same with both companies.
C. Joe’s plumbing is more expensive for a one-hour repair.
D. A four-hour job is cheaper with Mike’s plumbing.

Answer 2

D. A four-hour job is cheaper with Mike’s plumbing. is the right answer.

Answer 3

Okay thanks :-)