SOLUTION: John owns a hotdog stand. He has found that his profit is represented by the equation P(x)= -x^2+62x+79, with P being profits and x the number of hotdogs sold. How many hotdogs mus

Question 166842: John owns a hotdog stand. He has found that his profit is represented by the equation P(x)= -x^2+62x+79, with P being profits and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
To earn money, his profits have to be positive.

Let's find the point where the profits equal zero.
From that point on, his profit will be positive.

.
.
.
Check the equation.
John makes a $79 profit selling 0 hot dogs, that can't be right.
Also, when he sells more than a certain number (63), his profits become negative, that doesn't make sense either.
Check and re-post the problem.

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