Answer
A. The pattern is $\frac{1}{25}$, $\frac{1}{5}$, 1, 5, 25
B. $5^{4}$ = 625
C. $a^{n}$
Work Step by Step
A. The pattern is $\frac{1}{25}$, $\frac{1}{5}$, 1, 5, 25
$\frac{1}{5^{2}}$ = $\frac{1}{25}$
$\frac{1}{5^{1}}$ = $\frac{1}{5}$
$\frac{1}{5^{0}}$ = $\frac{1}{1}$ = 1
$\frac{1}{5^{-1}}$ = $5^{1}$ = 5
$\frac{1}{5^{-2}}$ = $5^{2}$ = 25
B. $\frac{1}{5^{-4}}$ = $5^{4}$ = 625
C. $\frac{1}{a^{-n}}$ = $a^{n}$
Therefore, the expression in terms of a is $a^{n}$
