2012 CEMC Gauss (Grade 8) Problems/Problem 9

Problem

When $x = 2$ , the value of $3^{x} - x^{3}$ is

$\text{ (A) }\ -2 \qquad\text{ (B) }\ 0 \qquad\text{ (C) }\ 3 \qquad\text{ (D) }\ 1 \qquad\text{ (E) }\ 9$

Plugging in $x = 2$ , we have:

$3^{x} - x^{3} = 3^2 - 2^3 = 9 - 8 = \boxed {\textbf {(D) } 1}$

~anabel.disher

2012 CEMC Gauss (Grade 8) (Problems • Answer Key • Resources)
Preceded by Problem 8	Followed by Problem 10
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25
CEMC Gauss (Grade 8)