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September 2, 2014

September 2, 2014

Posted by **fafa** on Saturday, December 15, 2012 at 12:23pm.

a. Find the total revenue, R(x).

b. Find the total profit, P(x).

c. How many smartphones must the company sell in order to maximize profit?

d. What is the maximum profit?

e. What price per smartphone must be charged in order to maximize profit?

- help...urgent..calculus -
**Steve**, Saturday, December 15, 2012 at 12:28pmR(x) = x*p(x) = x(280-.4x)

P(x) = R(x)-C(x) = x(280-.4x) - (5000+.6x^2)

= -x^2 + 280x - 5000

dP/dx = -2x + 280

max profit at x = 140

now figure P(x) and p(x)

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