Posted by **molly** on Friday, October 8, 2010 at 3:31pm.

Let C(q) represent the cost, R(q) the revenue, and π(q) the total profit, in dollars, of producing q items.

a) If C′(67) = 65 and R′(67) = 86, approximately how much profit is earned by item number 68?

b) If C′(149) = 120 and R′(149) = 98, approximately how much profit is earned by item number 150?

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