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2000 CEMC Gauss (Grade 8) Problems/Problem 8

Problem

If $x \ast y = x + y^{2}$ , then $2 \ast 3$ equals

$\text{ (A) }\ 8 \qquad\text{ (B) }\ 25 \qquad\text{ (C) }\ 11 \qquad\text{ (D) }\ 13 \qquad\text{ (E) }\ 7$

Solution

We can simply plug in $2$ and $3$ into $x + y^{2}$ :

$2 \ast 3 = 2 + 3^{2} = \boxed {\textbf {(C) } 11}$

~anabel.disher

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