You can either go to a movie or go bowling. if you choose the movie,

you will spend far more on the movie then you would on bowling
you will have made the choice that has the most benefit
your opportunity cost is the amount of money you pay for the movie
your opportunity cost is the time and experience of bowling

White truffles are a very prized and rare edible fungus that grow naturally in the countryside near alba, italy. suppose that it costs $200 per day to search for white truffles. on an average day, the total number of white truffles (t) found in alba is t = 20x − x 2 , where x is the number of people searching for white truffles on that day. white truffles can be sold for $100 each. if there is no regulation, how many more people will be searching for white truffles than the socially optimal number?