Question 998203
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1.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ C(x)\ =\ 85x\ +\ 100,000]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ R(x)\ =\ x(108\ -\ 0.001x)\ =\ 108x\ -\ 0.001x^2]


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


Substitute the functions, collect like terms, and then use the formula for the vertex of a parabola or take the first derivative to find the local maximum of the function.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

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*[tex \LARGE \ \ \ \ \ \ \ \ \ \