If government legislation requires businesses to switch to a different method of production that generates 50 percent fewer greenhouse gas emissions, compliance to this policy (assuming no other changes) can be illustrated in the Solow model by the aggregate production function that leads to a level of real GDP per person.

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?