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Solve the Problem $f ( x ) = 3 ^ { x }$

Question 343

Multiple Choice

Solve the problem.
-Suppose that $f ( x ) = 3 ^ { x }$ . If $f ( x ) = \frac { 1 } { 729 }$ , what is $x$ ?

A) 6
B) $- 2$
C) $- 5$
D) 5

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