Answer
$(-0.7, \frac{1}{2})$
Work Step by Step
RECALL:
If the point (a, b) is a solution of $f(x)$, then the point $(b, a)$ is a solution of the function's inverse.
Since $(\frac{1}{2}, -0.7)$ is a solution of $F(x)$, then $-0.7, \frac{1}{2})$ is a solution of $F^{-1}(x)$.
