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First calculate the hourly rate, which is the difference of cleaning 2 and 1 rooms:
175-125=50
then calculate the initial value by subtracting the hourly rate from the "1 room" cost:
125-50=75
The initial cost might be something like driving to the place (which is only necessary once), while the rate covers work time or cleaning utensils used.
Answer:
44
Step-by-step explanation:
Given:
Required:
Average range of change from 3 to 9
SOLUTION:
Step 1:
Find f(3) and f(9):
To find f(3), replace x with 3 in the given function
To find f(9), replace x with 9 in the given function
Average rate of change =
Where,
Plug in the values into the formula for average rate of change.
Average rate of change = 44
Y=6x^2 -5x+6 ( the first option )