What is 9 exponent of -2 simplified?
C is the answer because when you square nine you get 81 but you can't have a negative so you have to put a one over it as he numerator
remember\(x^{-m}= \frac{1}{x^m}\)so\(9^{-2}= \frac{1}{9^2}= \frac{1}{81}\)C is the answer
