Answer
$\frac{4}{9}$
Work Step by Step
1. Since exponents cannot be negative when simplifying you take the reciprocal of both numbers giving you $\frac{1}{3^2}+\frac{1}{3}$
2. Square the denominator of $\frac{1}{3^2}$ which will give you $\frac{1}{9}+\frac{1}{3}$
3. Add the fractions which will give you an answer of $\frac{4}{9}$
