Question

A school newspaper created an online news subscription service. The administrators of the service made predictions about the number of subscribers. Which prediction can be modeled using a linear equation?

A. Each month, the number of subscribers will increase by 15%.
B. The number of subscribers will double after each 12 month period.
C. After reading a maximum, the number of subscribers will decrease by 1/2 each month.
D. The number of new subscribers added each month will be 10% of the original student population.

Answer 1

I think it's between a and d

Answer 2

In D,
its a constant increase, of 10% of total student population.
which will not change , so yes, its D

Answer 3

why could it not be A?

Answer 4

because the increase is not a constant

1st month say the number of subscribers = 100

next months its 15% 0f 100 = 115

next month, 15% of 115 , which depends on previous result and is not a constant.

Answer 5

oh ok!

Answer 6

more?

Answer 7

sure