Question 1121113
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ P(x)\ =\ R(x)\ -\ C(x)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ P(x)\ =\ (115x\ -\ 0.5x^2)\ -\(60x\ +\ 800)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ P(x)\ =\ -0.5x^2\ +\ 55x\ -\ 800]


We need *[tex \Large P(x)\ =\ 400] so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ -0.5x^2\ +\ 55x\ -\ 800\ =\ 400]


Put the quadratic into standard form and solve for *[tex \Large x].  Hint:  This question has two distinct answers.
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
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