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    A firm has the following total-cost and demand functions:

    C=1/3Q^3 - 7Q^2 + 111Q +50

    Q= 100-P

    a) Does the total-cost function satisfy the coefficient restrictions of (9.5 [a, c, d > 0 ; b<0 ; b^2<3ac])

    b) Write out the total-revenue function R in terms of Q

    c) Formulate the total-profit function (pie) in terms of Q

    d) Find the profit-maximizing level of output Q*

    e) What is maximum profit?
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    Seeing as you haven't tried anything, I'm guessing you just want answers to hand in rather than help. Try googling it. The whole solution has been posted.
 
 
 
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