Answer:
1/64
Step-by-step explanation:
[tex]4^{-3}=\dfrac{1}{4^3}=\dfrac{1}{4\cdot 4\cdot 4}=\boxed{\dfrac{1}{64}}[/tex]
13
=4^-3 . 4 - 3
= 4^-3+1 -3
= 4^-2 -3
= 16-3
= 13
