malia has $500 to purchase water bottles and pairs of socks for a fundraiser for her schools cross-country team. she needs to buy a total of a least 200 items without buying too many of just one of them. the graph shows the possible number of water bottles and pairs of socks that malia should buy, and the system of inequalities. x+y greater than or equal to 200 2x+3y less than or equal to 500 the given system of inequalities only makes sense in the first quadrant. what two inequalities could be added to indicate this? explain.