Question

Which of the following is equal to 1/5^-2
A.1/25
B.-1/25
C.25
D.1/7

Answer 1

C. 25

Explanation:

The applicable rule of exponents is ...

a^b = 1/a^-b

Matching this pattern to your expression, you see that ...

a = 5

b = 2

Then ...

1/5^-2 = 5^2 = 25