Question

Consider the function f(x) = 9^x. Which statement MUST be true? A) f(4)/f(1) = f(8)/f(5) B) f(4)·f(1) = f(8)·f(5) C) f(4) − f(1) = f(8) − f(5) D) f(4) − f(1) = f(−4) − f(−1)

Answer 1

A

Explanation:

A

Answer 2

Explanation:

the true answer is (A)

the right side : 9^4 / 9^1 = 9^3

the left side : 9^8 / 9^5 = 9^3

two side are equal