Question

1. $7^{-2}(-3)^{2}$

Explanation:

Step1: Calculate exponents

$7^{-2}=\frac{1}{7^{2}}=\frac{1}{49}$ and $(-3)^{2}=9$

Step2: Multiply the results

$\frac{1}{49}\times9=\frac{9}{49}$

Answer:

$\frac{9}{49}$