1993 AHSME Problems/Problem 4

Problem

Define the operation " $\circ$ " by $x\circ y=4x-3y+xy$ , for all real numbers $x$ and $y$ . For how many real numbers $y$ does $3\circ y=12$ ?

$\text{(A) } 0\quad \text{(B) } 1\quad \text{(C) } 3\quad \text{(D) } 4\quad \text{(E) more than 4}$

$\fbox{E}$

1993 AHSME (Problems • Answer Key • Resources)
Preceded by Problem 3	Followed by Problem 5
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