Suppose that the weekly sales volume y (in thousands of units sold) depends on the price per unit (in dollars) of the product according to the following formula. y = 33(3p+1)-2/5, p>0 (a) Find de = -0.11 What is the rate of change in sales volume when the price is $21? (Round your answer to three decimal places.) dy dpp-21 (b) Interpret your answer to part (a). (Round your answer to the nearest whole number.) If the price increases $1, sales volume will decrease by about units. Need Help? Read It

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