2. The equation for a demand curve has been estimated to be Q = 100 - 10 P + 0.5 Y, where Q is quantity, P is price, and K is income. Assume P = 7 and Y = 50.

a. Interpret the equation.
b. At a price of 7, what is price elasticity?
c. At an income level of 50, what is income elasticity?

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