In Example 2.8, we discussed the recent increase in world demand for copper, due in part to China's rising consumption. Using the original elasticities of demand and supply (i.e., E5 = 1.5 and ED = 0.5), calculate the effect of a 40percent decrease in copper demand on the price of copper. Recall that the demand equation is Q = 27 3P, the supply equation is Q = 9 + 9P, the initial equilibrium price is P' = $3.00 (dollars per pound), and the initial equilibrium quantity is Q' =18 (million metric tons per year). As a result of this change in demand, the price of copper will decrease by $ 0.67 . (Enter your response rounded to two decimal places.) Now calculate the effect of this change in demand on the equilibrium quantity, 0'. As a result of this change in demand, the equilibrium quantity will decrease by 5.99 million metric tons per year. (Enter your response rounded to two decimal places.) As we discussed in Example 2.8, the U.S. production of copper declined between 2000 and 2003. Calculate the effect of both a 40percent decrease in copper demand (as you did above) and a 15-percent decline in copper supply. Note: use the initial equilibrium values for P' (= $3.00) and Q' {= 18 million metric tons) when calculating the changes below As a result of both of these changes, the equilibrium price of copper will decrease by $ (Enter your response rounded to two decimal places.)