The correct answer is b all others are nonlinesr
Answer is 68x bud thanks for lettting me ANWSER
5^-3 is 1/125
The negative in the exponent makes it so there is a 1 over the problem if there was no negative. When you have a negative in the exponent, the answer will be the reciprocal (opposite) of the question with no negative.
For example,
9^2 = 81
9^-2 = 1/81
1/9=0.11111.....
so the correct option is (a).