Choose the one alternative that best completes the statement or answers the question.
Solve the equation.
-$$9 ^ { x } = \frac { 1 } { 729 }$$
A) $\{ - 3 \}$
B) $\{ 3 \}$
C) $\left\{ \frac { 1 } { 3 } \right\}$
D) $\left\{ - \frac { 1 } { 3 } \right\}$

Question

Quizplus · Accepted Answer

$$9^x = \frac{1}{729}$$ can be rewritten as $9^x = 9^{-3}$ because $729 = 9^3$, and thus $x = -3$.

Choose the One Alternative That Best Completes the Statement or Answers