Please answer this question for me. 10 pts, will mark brainliest!!

answer:

f(x) = 9 *

Step-by-step explanation:

f(x) = a * b^x

When x = 0, f(x) = 9

9 = a * b^0

9 = a * 1

9 = a

When x = 1, f(x) = 15

15 = 9 * b^1

15 / 9 = 9 * b / 9

15/3 / 9/3 = b

5/3 = b

answer:  f(x) = 9 *

answer: 0,6

step-by-step explanation:

this would make it the y intercept.