We are asked to identify which properties of exponent to apply in order to reduce the expression:
[tex]9^{-3}[/tex]
This is the property associated with negative exponents that include the fact that we are dealing with a division:
[tex]a^{-n}=\frac{1}{a^n}[/tex]
This is the negative exponent property, so for our case we write;
[tex]9^{-3}=\frac{1}{9^3}=\frac{1}{729}[/tex]
SO find the property I am higlighting in the image below:
