Question

Does anyone know how to do b

Answer 1

Answer:

$\frac{1}{9}$

Step-by-step explanation:

Using the rule of exponents

$a^{-m}$ = $\frac{1}{a^{m} }$ , then

$3^{-2}$ = $\frac{1}{3^2}$ = $\frac{1}{9}$