Question

QUICK QUESTION!

The number of subscribers y to a magazine after t years is shown by the equation below:

y = 95(0.75)t

Which conclusion is correct about the number of subscribers to the magazine?
(A) It increased by 25% every year.
(B) It decreased by 25% every year.
(C) It increased by 75% every year.
(D) It decreased by 75% every year.

Answer 1

@jim_thompson5910 I need you again! Is this D?

Answer 2

why do you think D

Answer 3

Because, when t = 1, y = 71.25. When t = 0, y = 95. It went from 95 to 71.25 by multiplying 0.75 by 95, equaling 71.25

Answer 4

going from 95 to 71.25, what is the amount (not percentage) in decrease?

Answer 5

It decreased by 23.75 subscribers

Answer 6

divide that by the original amount 95

Answer 7

0.25

Answer 8

so 25% of 95 is 23.75

saying "we lost 23.75 subscribers" is the same as saying "we lost 25% of our subscribers" (going from 95 to 23.75)

Answer 9

Oh I think I understand. You are doing average rate of change, right?

Answer 10

no, but it's somewhat related in a way

Answer 11

Oh, well, okay -_- Thanks so much!

Answer 12

sure thing