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» » » » Post: Re: Profit

Print at May 24, 2013 5:14:43 AM

Posted by pskinner at Jan 21, 2009 12:48:12 PM

Re: Profit

I need help figuring out P=3x^2-17x+20.

For what values of x does the company make a profit?

Factoring, you get: P(x)=(3x-5)(x-4). So, the zeros are at x=5/3 and x=4. This is a parabola opening up, hitting the x-axis that the two zeros. So, if x>4 or x<5/3, there is a profit.
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Principal Skinner