50 , where Px is the price, M median family income, and Pz is the price of...

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− 50 , where Px is the price, M median family income, and Pz is the price of bailiwicks. Suppose that Px = $5, M = $20,000, and Pz = $15.

a. What is the price elasticity of demand?

b. Is the firm maximizing its total revenue at Px = $5. If not, what price should Paradox charge?

c. Calculate the income elasticity of demand at Px = $5.

d. Calculate the cross-price elasticity of demand at Px = $5.

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