why does levying unit tax lead to deadweight losses please use consumer surplus and producer surplus to explain​

Emily bought 200 shares of abc co. stock for $29.00 per share on 60% margin. assume she holds the stock for one year and that her interest costs will be $80 over the holding period. ignoring commissions, what is her percentage return (loss) on invested capital if the stock price went down 10%?

2. the language of price controls consider the market for rental cars. suppose that, in a competitive market without government regulations, the equilibrium price of rental cars is $58 per day, and employees at car rental companies earn $19.50 per hour. complete the following table by indicating whether each of the statements is an example of a price ceiling or a price floor and whether it results in a shortage or a surplus or has no effect on the price and quantity that prevail in the market. statement price control effect there are many teenagers who would like to work at car rental companies, but the minimum-wage law sets the hourly wage at $23.00. the government has instituted a legal minimum price of $87 per day for rental cars. the government prohibits car rental companies from renting out rental cars for more than $87 per day.

(a) what was the opportunity cost of non-gm food for many buyers before 2008? (b) why did they prefer the alternative? (c) what was the opportunity cost in 2008? (d) why did it change?