Luella drives her vehicle the same number of miles each day. The number of miles remaining before her vehicle is due for its next routine service is represented by the function below, where x represents the number of days she has driven her vehicle since her last routine service.

M(x) = 4,000 - 28x

What is the average rate of change over the interval [60, 90]?

A. 28 miles per day
B. -28 miles per day
C. -25 miles per day
D. 25 miles per day

Question

Luella drives her vehicle the same number of miles each day. The number of miles remaining before her vehicle is due for its next routine service is represented by the function below, where x represents the number of days she has driven her vehicle since her last routine service.

M(x) = 4,000 - 28x

What is the average rate of change over the interval [60, 90]?

        A.  	28 miles per day
	B.  	-28 miles per day
	C.  	-25 miles per day
	D.  	25 miles per day

anonymous · Answer

the answer would have to be in my guess I would say 25 miles per day