Solve the equation without using a calculator.
-$$3 ^ { - x } = \frac { 1 } { 9 }$$
A)2
B) $\frac { 1 } { 3 }$
C) $\frac { 1 } { 2 }$
D)-2

Name: Solve the equation without using a calculator. -\[3 ^ { - x } = \frac { 1 } { 9 }\] A)2 B) $\frac { 1 } { 3 }$ C) $\frac { 1 } { 2 }$ D)-2
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Question

Quizplus · Accepted Answer

$$3^{-x} = \frac{1}{9}$$ can be rewritten as $$3^{-x} = 3^{-2}$$, which implies that $-x = -2$. Solving for $x$ gives $x = 2$.

Solve the Equation Without Using a Calculator 3−x=193 ^ { - x } = \frac { 1 } { 9 }3−x=91​

Solve the Equation Without Using a Calculator $3 ^ { - x } = \frac { 1 } { 9 }$