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2. Demand for DVD rentals at a video store is described by the equation: Q = 4,000 - 500P, where Q denotes the number of

2. Demand for DVD rentals at a video store is described by the equation: Q = 4,000 - 500P,

where Q denotes the number of DVDs rented per week and P is the rental price in dollars.

(a) Determine the point price elasticity of demand at P = $3.

(b) What is the new point price elasticity if price is raised to P = $4.50? Comment on the

change in elasticity.

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