Part A A cleaning service charges an initial fee plus an hourly rate. The total cost for different
numbers of hours, including the initial fee, is shown on the graph.
Cleaning Costs
y
90
80
70
A 60
(3, 44)
(2, 36)
50
8 40
30
20
10
0
(1, 28)
x
1 2 3 4
Number of Hours
Find and interpret the rate of change.
The rate of change is
so the hourly rate is $
Find and interpret the initial value.