Answer:
b. 4^-3
Step-by-step explanation:
The expression can be simplified to a number of different levels. Here, it looks like the answer choices want you to simplify it like this:
[tex]\dfrac{8^{-3}}{2^{-3}}=\left(\dfrac{8}{2}\right)^{-3}=\boxed{4^{-3}}[/tex]
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In this case, the applicable rule of exponents is ...
(a/b)^c = (a^c)/(b^c)
