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A certain company produces a certain item. The profit, in thousands of dollars, generated by selling x units of this item, is given by P(x)=-.001x^3+3x, where x is measured in thousands.   a...

Jane wants to build a rectangular shaped dog pen. She has 500 feet of fencing and she wants to make the area as large as possible. a. What should the dimensions be to maximize the area? b...

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