Question 607844
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Hi
Using the vertex form of a parabola, {{{y=a(x-h)^2 +k}}} where(h,k) is the vertex
P(x)=-x^2+64x+72 = -(x-32)^2+ 1024 + 72  |completing the Square
P(x)=-(x-32)+ 1096 |Parabola opening downward, Pt(32,1096)maximum
earn the most profit when x = 32