Consider that the demand function for spring water is as follows: Q = 450 - 100P + 0.0001Pop + 0.005Y + 0.003A where: Q = quantity in thousands of containers, P = Price ($) = $4; Pop = Population (# of people) = 4,000,000 Y = Disposable Income per capita ($) = $50,000; A = Advertising expenditures ($) = 400,000 a. Determine the demand for spring water b. Determine the demand curve for spring water c. What is the inverse demand curve for spring water? (note: simplify—no fractions)