Answer
$3$ to the power of what number is equivalent to $81$?
Work Step by Step
The logarithmic equation $ y= \log_a (b)$ when $ x \gt 0$ and $ b \gt 0; b \ne 1$ is equivalent to the exponential form $ a^y=x $, where the logarithmic function $ y $ is the exponent of the exponential function.
We have $3^n=81$
The question arises: $3$ to the power of what number is equivalent to $81$?