Suppose the demand for gasoline is QD = 75 – 25PD and supply is QS = 30 + 20PS, where prices are expressed in dollars per gallon. How does a $0.40 per gallon tax affect the equilibrium price and quantity of gasoline (show both the pre-tax and post tax equilibria)? What is the elasticity of demand and supply? In the short-run do you expect producers or consumers to put up the most resistance to the tax? What about in the long-run? Explain your answer with sentences.