Question

The graph show me the function f(x)=3^x. What is the value of x when f(x)=9?

Answer 1

The answer would be 2 as 3^2 is equivalent to 3x3 which is 9.

Explanation:

1. 9=3^x

2. (3)^2=3^x

3. Bases are similar look at exponents

3. x=2