Please provide the final answers. Thanks

Suppose that in the cigarette market in Paris, the demand curve is given by P = 9-Q. and the supply curve is given by P = 6Q, where Q represents millions of cigarettes. Further, suppose that smoking cigarettes produces an additional cost for Paris residents valued at $4 per million cigarettes. What is the privately optimal price of cigarettes (in millions)? Answer: Market supply is described by Q = 3P, where @ is the quantity demanded and P is the price in dollars. Let the market equilibrium price be $8 . What is the producer surplus? Answer: girl D likes two things: seafood pasta and tofu. She can purchase as much tofu as she would like for $1 per serving. Considering her utility as defined below, what is " she reservation price for her 8th portion of seafood pasta? Seafood pasta Tofu Units Units (portions) Total Utility Total Utility (portions) 300 7.5 2 450 2 15 3 570 22.5 4 675 4 30 5 750 5 37.5 6 795 6 45 832.5 52.5 8 862.5 60 9 377.5 67.5 10 892.5 10 75