Question

Help help help me please

Answer 1

When the base is the same, and it is a ÷, subtract the exponents (if it is a ×, add the exponents):
-11/3-(-2/3)=-9/3=-3
4^(-3)=1/4³=1/64
the first choice is correct. 

Answer 2

$4^{- \frac{11}{3} }:4^{- \frac{2}{3} }=4^{- \frac{11}{3}-(- \frac{2}{3})}=4^{- \frac{11}{3}+ \frac{2}{3}}=4^{- \frac{9}{3}}=4^{-3} = \frac{1}{4^3}= \frac{1}{64}$

The answer is A