???? = 30 ? 2???? + 3???????? ? 4???????? + 0.1???? ???? = 8 + 2???? ? 0.5???????? where ???????? = 4, ???????? = 3, ???? = 40, and ???????? = 4 Use the above equations and values of the variables to solve the following problems: a) Solve for the equilibrium price and quantity b) Draw a graph of the market. Be sure to label the supply curve with an S, label the demand curve with a D, properly calculate the y-intercept of the demand curve and the y-intercept of the supply curve, and use the calculated equilibrium from part a to label the equilibrium in the graph c) At P = $9 calculate QD, QS, state whether there is a surplus or shortage, and calculate theamount of the surplus or shortage. d) Calculate the price elasticity of demand at the equilibrium.