James is looking for a new suit for a job interview. he is shopping at smith & jones, a well-regarded menswear store. while he looks at various styles and uses his smartphone to scan codes, the menswear shopping app provides him with suggestions for shirts, ties, and shoes that would complete the ensemble he needs to make a strong, positive impact at his interview. the ability of the app to provide this information serves to

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?