Answer
$f(3)=72$
Work Step by Step
The given function is
$\Rightarrow f(x)=\frac{1}{3}(6)^x$
Substitute $3$ for $x$.
$\Rightarrow f(3)=\frac{1}{3}(6)^3$
Evaluate the power.
$\Rightarrow f(3)=\frac{1}{3}\cdot 216$
Simplify.
$\Rightarrow f(3)=72$.
