Answer
A) $\frac{1}{4^{3}}$
Work Step by Step
When dividing exponents with the same base, subtract the exponents by each other, $a^{b}\div a^{c}=a^{(b-c)}$.
In this problem, do $3-6$, which gives you $-3$.This gives you $4^{-3}$, which is equal to $\frac{1}{4^{3}}$.
