the demand and supply function for goods are given by Pd : 120-2Qd and Ps = 30+Qs. 1) calculate the equilibrium price and quantity. 2) Calculate the excess of supply (Qs-Qd) 3) Calculate the excess of demand (Qd-Qs) when p=42

19. The demand and supply function for goods are given by P.: 120- 20, and P.= 30+ Q. Calculate the equilibrium price and quantity. Calculate the excess of supply(Q.-Qui) hii) Calculate the excess of demand (Q.-Q.) when p=42