The value, V (m), of a comic book m months after publication has an average rate of change of - 0.04 between m = 36 and m = 60. Which statement must be true? The value of the comic book decreased by a total of $0.04 between m = 36 and m = 60. The value of the comic book increased by a total of $0.04 between m = 36 and m = 60. The value of the comic book decreased by an average of $0.04 each month between m = 36 and m = 60. The value of the comic book increased by an average of $0.04 each month between m = 36 and m = 60.

The value of the comic book decreased by an average of $0.04 each

month between m = 36 and m = 60 ⇒ 3rd answer

Step-by-step explanation:

* Lets explain how to solve the problem

- Average rate of change is the change in the value of a quantity

divided by the time elapsed

- An average rate of change function is a process that calculates

the amount of change in one quantity divided by the corresponding

amount of change in another quantity

- The average rate = change of quantity/change in time

- The average rate = change of quantity per unit time

- If the average rate is increasing then its value is positive

- If the average rate is decreasing then its value is negative

- Lets solve the problem

∵ V (m) is the value of a comic book, m months after publication

∵ It has an average rate of change of - 0.04 between m = 36

and m = 60

∵ The value of the rate of change is negative

∴ The rate of change is decreasing

∵ The average rate = change of quantity per unit time

∴ The value of the comic book decreased by an average of $0.04

each month between m = 36 and m = 60