Suppose the weekly demand and supply curves for used DVDs in Lincoln, Nebraska, are as shown in the diagram. A graph titled market for used D V Ds.The horizontal axis labeled quantity of d v ds per week ranges from 0 to 26 in increments of 2. The vertical axis labeled price in dollars per d v d ranges from 0 to 13 in increments of 1. A line labeled S begins at the point (0, 6) goes up to the right passing through the point (2, 7.5) and (6, 10.5), and ends at the point (8, 12). A second line labeled D begins at the point (0, 12) goes down to the right passing through the point (2, 11.5), (6, 10.5), and (18, 7.5), and ends at the point (24, 6). Suppose a coalition of students from Lincoln High School succeeds in persuading the local government to impose a price ceiling of $7.50 on used DVDs, on the grounds that local suppliers are taking advantage of teenagers by charging exorbitant prices. a. Calculate the weekly shortage of used DVDs that will result from this policy. Instructions: Enter your response as a whole number. used DVDs. b. Calculate the total economic surplus lost every week as a result of the price ceiling. Instructions: Enter your response rounded to the nearest penny (two decimal places). $ per week.