Question

What is 4^3 times 4^-5
A. 4^-15
B. 4^-2
C. 4^2
D. 4^8

Answer 1

4^3=4*4*4=64
4^-5
=$\frac{1}{4*4*4*4*4} =$=$\frac{1}{4^{5} }$
=$\frac{1}{1024}$
==$\frac{1}{1024}$*64 = $\frac{1}{16}$ 
$\frac{1}{16}$ Decimal: 0.0625 is your answer.