please help?!?

Question 9 (Challenging). Doug Judy is the only used car dealer in Brooklyn. His monthly demand and cost schedules are given in the table below: Price Quantity Total (in thousands) Demanded cost $10 0 $10 $9 1 $13 $8 2 $16 $7 3 $19 $6 4 $22 $5 5 $25 $4 6 $28 $3 7 $31 $2 8 $34 $1 9 $37 $0 10 $40 a) Calculate Doug Judy's marginal revenue, marginal cost and average total cost. b} How many used cars will Doug Just sell per month? How much will he charge per car? c) Calculate consumer and producer surplus, and deadweight loss in this market. d} If the government sets the price where the demand curve intersects the average total cost curve, what type of regulation is this? e) How does consumer and producer surplus, and deadweight loss change under this regulation? 1') Calculate consumer and producer surplus, and deadweight loss in this market. Does this maximise total surplus? Q) Will Doug Judy continue selling used cars in the short-run? What about in the long-run