Free GMAT Practice Questions

Question 1 of 1
ID: GMAT-PS-10
Section: Quantitative Reasoning - Problem Solving
Topics: Functions; Exponential Function
Difficulty level: Challenging

(Practice Mode: Single selected Question » Back to Overview)

A function is defined by $f(x)=3^{-x}-\frac{1}{9}$. If the value of $f(x)=\frac{1}{81}$, the value of $x$ is between

A3 and 4
B2 and 3
C1 and 2
D0 and 1
E-1 and 0

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