Suppose the demand and supply functions of public transport in Sydney are given by P+2Qd=144 4P-3Qs = 136 where P, Qd, and Qs, denote the price, quantity demanded, and quantity supplied, respectively. a) Determine the equilibrium price and quantity of public transport in Sydney. (4 marks) b) Draw a fully labelled diagram showing the equilibrium price and quantity. Place price on the Y-axis and quantity on the X-axis. (4 marks)