Consider the following demand and supply curves. Demand is Qd = 90 - 0.5P and Supply is QS = 2P. a)Calculate the equilibrium price and quantity. b)Calculate the revenue, economic surplus and consumer surplus received from this product. c)If a per unit tax of $3.00 is added to the supply curve, calculate the new equilibrium price and quantity, and calculate how consumer surplus, marginal value, and total value are affected in this market? Explain