SOLUTION: The owner of a video store has determined that the profits P of the store are approximately given by P(x)=-x^+80x+63, where x is number of videos rented daily. Find the maximum pr

Question 1103716: The owner of a video store has determined that the profits P of the store are approximately given by P(x)=-x^+80x+63, where x is number of videos rented daily. Find the maximum profit to the nearest dollar.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
I assume you mean -x^2(?).
Convert to vertex form to find the maximum.

The maximum occurs at the vertex (40,1663).

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