Use a Graphing Calculator to Estimate the Solution Set of the Equation

Multiple Choice

Use a graphing calculator to estimate the solution set of the equation. Round to the nearest hundredth.
- $$\left( \frac { 1 } { 2 } \right) ^ { x } = 18$$

A) $\{ - 0.24 \}$
B) $\{ - 9.00 \}$
C) $\{ - 4.17 \}$
D) $\{ 4.17 \}$