Suppose that you estimated the following demand curve.
Q = 400 - 6P + .005I
Q represents quantity demanded, P represents price and I represents average income. You know that the current market price is $20 and average income is $20,000
(a) Calculate current quantity demanded.
(b) Calculate the price elasticity of demand using the point elasticity formula. Please show your calculations
(c) Calculate the income elasticity of demand using the point elasticity formula. Please show your calculations.