Explanation:
Negative exponents tells us that the number has to be in the numerator (if it's in the numerator it has to be in the denominator):
[tex]\frac{1}{4^{-4}}=4^4[/tex]Now we just have to solve:
[tex]4^4=4\times4\times4\times4=256[/tex]Answer:
The result is 256