<PRE><B>Question 761201</B>
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \  C(x)\ =\ 2400\ +\ 2x]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  R(x)\ =\ 10x]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  P(x)\ =\ R(x)\ -\ C(x)]


Profit from 500 is *[tex \LARGE P(500)]


Just do the arithmetic.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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