The value, cap v times m , of a comic book m months after publication has an average rate of change of negative 0 point 0 4 between m is equal to 36 and m is equal to 60 Which statement must be true?
Answer
A
The value of the comic book increased by an average of 0 point 0 4 dollars each month between m is equal to 36 and m is equal to 60 .
B
The value of the comic book decreased by an average of 0 point 0 4 dollars each month between m is equal to 36 and m is equal to 60 .
C
The value of the comic book increased by a total of 0 point 0 4 dollars between m is equal to 36 and m is equal to 60 .
Explanation
An average rate of change of −0.04 means the comic book’s value changed by negative $0.04 per month over the interval from 36 to 60 months. The negative sign indicates a decrease, so its value decreased by an average of $0.04 each month. Choice B states this; choice C incorrectly describes the total change as $0.04.
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