Question

Select the situation in which one quantity is changing at a constant rate in relation to another quantity. A. Claire earns 2% interest on her retirement fund every month. B. The production of wool at a factory doubles every 2 years. C. The value of a car is 0.8 times the value of the car the previous year. D. Emma read 15 pages of her novel each hour.

Answer 1

D. Emma read 15 pages of her novel each hour.

Explanation:

Earning 2% interest means the amount of interest, in terms of dollar amounts, changes every year. This is not a constant rate of change.

Doubling the production means the amount of extra production changes every year. This is not a constant rate of change.

A value of 0.8 times the value the previous year means the amount of decrease changes every year. This is not a constant rate of change.

Reading 15 pages of a novel every hour means that every hour, the number of additional pages read is the same. This is a constant rate of change.

Answer 2

D. is the answer to this question