A company has a weekly marginal profit function given by P'(x) = 40x – 0.38a? – 251 dollars per item when æ items are made and sold. Find the change in profit when the number of items made and sold each week increases from 128 to 146. Round your answer to the nearest cent.

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Q: Find the marginal revenue for producing x units. 50( 40x – x³/2) R = dR dollars per unit dx

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