A particular computing company finds that its weekly profit, in dollars, from the production and sale of x laptop computers is P(x) = -0.006x -0 3x + 600x- 800. Currently the company builds and sells 8 laptops weekly a) What is the current weekly profit? b) How much profit would be lost if production and sales dropped to 7 laptops weekly? c) What is the marginal profit when x= 8? d) Use the answer from part (a) and (c) to estimate the profit resulting from the production and sale of 9 laptops weekly

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