Answer:
-2
Step-by-step explanation:
[tex]a^{-b}=\frac{1}{a^b}\\\frac{1}{2}^{-1}=2\\-4^{-1}=-\frac{1}{4}\\\2*-\frac{1}{4}=-.5\\\\-.5^{-1}=-2[/tex]
-2 is answer
