Write an expression using exponents that is equivalent to each of the following expressions.
a. 5^-3
b. (-16)^-2
c.1/8^4

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

The answer is e &