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 = 29(3p + 1)−2/5,  p > 0 (a) What is the rate of change in sales volume when the price is $21? (Round your answer to three decimal places.) dy dp =

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Exponential Growth Model

The relation that represents an exponential function is: