Your mom is thinking of retiring. her retirement plan will pay her either $ 200 comma 000immediately on retirement or $ 280 comma 000five years after the date of her retirement. which alternative should she choose if the interest rate​ is: a.0 %per​ year? b. 8 %per​ year? c. 20 %per​ year?

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?