Answer:
The three rules that we have are:
![x^a*x^b = x^(a + b)](https://img.qammunity.org/2021/formulas/mathematics/high-school/ugjoswvjxqfu54w6on8ndbp4s6z1prqe1x.png)
![(x^a)/(x^b) = x^(a - b)](https://img.qammunity.org/2021/formulas/mathematics/high-school/a493d7dukgxj5elkgdsuzzox3aly296g0r.png)
![(x^a)^b = x^(a*b)](https://img.qammunity.org/2021/formulas/mathematics/high-school/zzsc8c7a3j5oi49q01fg4u1j6iyn3m5vgv.png)
Then let's solve the problems:
A) 2^4 = 2^(2*2) = (2^2)^2 = 4^2 = 16.
B) 3^0 = 3^(a - a) = 3^a/3^a = 1. (for any real number a)
From this we can conclude that the power 0 of any number is equal to 1.
C) 4^6*4^(-3) = 4^(6 - 3) = 4^3 = 64
D) (2^3)^2 = 2^(3*2) = 2^6 = 64