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A certain item can be produced at a cost of $10 per unit, the demand equation...

A certain item can be produced at a cost of $10 per unit, the demand equation for this item is p=90-.02q, where p is the price per unit in dollars and q is the number of units. a) Give the cost function C, the revenue function R, and the profit function P.

b) use a derivative to determine the number of units that would produce the maximum profit and what that profit would be. Verify using the second derivative test

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