Might need calculus background

. Elasticities a) Find El;9 f (m) for f (:r) = 100x50. b) Find Ele(a:) for f(:c) = 100(ex + 1). c) Find the price elasticity of the demand function QD = 2'70 p. (1) Demand for ski lessons is a function of both price and income. Suppose that p is held constant at p = $50 per lesson. Then demand can be written as 1 2 1 QB = 100 ($50) + 203; where y is the income of the customer in thousands of dollars/year. What is the income elasticity of demand for ski lessons, or ElyQD? Provide an interpretation of ElyQD when y = 50