Suppose that Southern Airways is a monopolist for a particular air route. The market has two segments based on the two types of passengers: economy class (e) and business class (b). Southern Airways aims to maximize profits by capturing both market segments by using price discrimination. Southern Airways has the following functions: Demand Function (e): e = 120 - 2 Demand Function (b): b = 160 6 Southern Airways Total Cost Function: = 40 + 30 a) Derive the MR (Marginal Revenue) function for both market segments. b) Derive Southern Airway's Marginal Cost. c) What is the profit maximising price and quantity for both market segments? d) What is Southern Airway's Total Revenue? e) What is Southern Airway's Total Profit?