The problem goes like this:

The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2+300x-200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?

Hello tj:

Homework ISN'T something we do. Apparently, it's not something YOU do either.

excon

Please have a go, where are you having difficulty?

Do you know how to differentiate?

Tjb, please read this: https://www.askmehelpdesk.com/math-s...board-b-u.html

This is not a bad site at all. All of us must stick to the rules that have been put in place by the owners of the site. If you really want help trying to work out your problem, you need to let us know what exactly is stumping you, so we can effectively help you understand, and work through, the problem. Capuchin is very good at it, if you are willing to give him the opportunity to help you.

Quote:

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Originally Posted by tjb88

The problem goes like this:

The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2+300x-200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?

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You may want to double check my work but I believe the answer is 199.60, and the last part I haven't the slightest clue