Two plumbing companies charge money for each hour of work, plus a one-time fee. Use
the following information to answer the next three questions.
A Plus Plumbing charges
according to this table.
time (hours)
cost (dollars)
80
140
320
What is the equation?
a. y=60x + 80
6
440
b. y=80x
C. y= 1x + 140