Answer

1/25

Work Step by Step

We follow the instructions and plug -3 in for r and 5 in for s. This leaves us with the expression:
$-3^{0} \times 5^{-2}$
Recall the equation: $a^{-n}= \frac{1}{a^{n}}$. Also, remember that anything raised to the zeroth power is 1. Thus, this expression simplifies to:
$1/ 5^{2}= 1/25$