Question 1079985

P(x)=-2x^2+40x+320
Find the maximum profit of this quadratic equation

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<pre>{{{P(x) = - 2x^2 + 40x + 320}}}
Maximum profit occurs where: {{{matrix(1,15, x, "=", - b/(2a), or, x, "=", (- 40)/(2 * - 2), or, x, "=", (- 40)/(- 4), or, x, "=", 10))}}} 
Maximum profit, or: {{{matrix(1,7, P(10), "=", - 2(10)^2 + 40(10) + 320, "=", - 200 + 400 + 320, or, 520))}}}