Question

Let D(x) be the demand (in units) for a new product when the price is x dollars.

D(5.25) = 800

D'(5.25) = −40

Formula for the revenue R(x) generated from the sale of the product when the price is x dollars is R(x) = x · D(x). Assume demand is equal to the number sold.

1. Calculate R'(x) when x = 5.25.


R'(5.25) = $______ per dollar

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