Answer:
-4.125
Step-by-step explanation:
Answer:
4.837
Step-by-step explanation:
Plumber a = 60x
Plumber b = 40+55x
An 8 hour job would cost the same for both plumbers. It would cost $480. Plumber a should be hired for a 5 hour job.
20 and -1: they add into 19 and since a negative times a positive is a negative they multiply to -20
