November 29, 2015

Homework Help: Math

Posted by Hannah on Saturday, February 26, 2011 at 2:57pm.

A manufacturer estimates that the profit P from producing x units of a commodity is P=-x^2+40x-100 dollars per week. What is the maximium profit he can realize in one week?

I was going to take the derivative of the equation and set it equal to 0 and then plug it back in but it didn't work. The answer is 300 but I do not know how to get this.

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