Answer
$\ln{\left(\dfrac{1}{81}\right)}$
Work Step by Step
Recall:
(1) $n\cdot \ln{a}=\ln{a^n}$
(2) $\ln{a}+\ln{b}=\ln{(ab)}$
(3) $\ln{a}-\ln{b} = \ln{\left(\frac{a}{b}\right)}$
Use rule (1) above to obtain:
\begin{align*}
&=\ln{3}-\ln{\left(3^5\right)}\\
\end{align*}
Use rule (3) above to obtain:
\begin{align*}
&=\ln{\left(\frac{3}{3^5}\right)}\\\\
&=\ln{\left(\frac{1}{3^4}\right)}\\\\
&=\ln{\left(\frac{1}{81}\right)}
\end{align*}