Answer:
Step-by-step explanation(A):
[tex]a^{-b}=\frac{1}{a^b}\\\frac{1}{4^2}\\4^2=16\\\frac{1}{16}\\= 0.0625[/tex]
Step-by-step explanation(BA):
[tex]7 \div 7 = 1[/tex]
when dealing with an exponent of 0, your answer essentially is always 1, so divide the number by itself.
Step-by-step explanation(BB):
[tex]a^0=1,\: \:a\ne \:0[/tex]
