Mr. tucker earns $250 per week working in an appliance store. in addition, he earns 2% commission on all of his sales. last week, he sold $2,800 worth of appliances. what was mr. tucker's total income for the week? a $56 b $287 c $306 d $467 released

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?