Posted by Harold on Tuesday, June 26, 2012 at 1:42pm.
A company manufactures and sells x cellphones per week. The weekly pricedemand and cost equations are given below P=400.5x and C(x)=20000+130x
What price should the company charge for the phones and how many phones should be produced to maximize the weekly revenue. What is maximum weekly Revenue?

calculus  Steve, Tuesday, June 26, 2012 at 3:41pm
revenue is sales*price
R(x) = x(400.5x) = 400x  .5x^2
dR/dx = 400  x
dR/dx = 0 when x = 400
R(400) = 400(400200) = 80000
Cost doesn't figure into revenue. Now, if you want profit, subtract cost from revenue.
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