The zeros of a parabola are −5 and −3. The point (0, 60) is on the graph as represented by the equation. 60 is equal to a open paren 0 plus 5 close paren open paren 0 plus 3 close paren What is the value of A ?

The zeros −5 and −3 give the factored equation y = a(x + 5)(x + 3). Substitute the point (0, 60): 60 = a(0 + 5)(0 + 3) = 15a, so a = 60 ÷ 15 = 4. The correct choice is D, 4.

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