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OpenStudy (anonymous):
A manufacturer finds that the revenue generated by selling x gadgets is given by the function R(x)=320x-.2x^2, where the revenue r(x) is measurd in dollars. What is the maximum revenue? a- $800 b- $1600 c- $128000 d- $384000 e- $256000
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OpenStudy (mertsj):
R' = 320 -4x That is the first derivative. The function will be a maximum when the first derivative is 0. So if 320-.4x = 0 x = 800 So now plug 800 into the original function and get 128,000
OpenStudy (anonymous):
how did you get 800
OpenStudy (anonymous):
?
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