Question

what is the common ratio of the exponential function $f(x)=3^x$?
a. 1
b. 3
c. 2
d. 0

Explanation:

Step1: Recall exponential function form

An exponential function is defined as $f(x) = a^x$, where $a$ is the common ratio ($a>0, a
eq1$).

Step2: Match given function to form

The given function is $f(x) = 3^x$. Comparing to $f(x)=a^x$, we identify $a=3$.

Answer:

b. 3