Chapter 7 - Exponents and Exponential Functions - 7-1 Zero and Negative Exponents - Practice and Problem-Solving Exercises - Page 419: 63

The fraction I chose was $\frac{1}{2}$ $a^{-1}$ = 2 $a^{2}$ = $\frac{1}{4}$ $a^{-2}$ = 4

$a^{-1}$ = $(\frac{1}{2})^{-1}$ =$(\frac{2}{1})^{1}$ $a^{2}$ = $(\frac{1}{2})^{2}$ =$(\frac{1}{4})$ $a^{-2}$ = $(\frac{1}{2})^{-2}$ =$(\frac{2}{1})^{2}$ =4