Need quickly (: a grocer sells 30 loaves of bread a day. the cost is $2.50 per loaf. the grocer estimates that for each $0.50 increase in cost, 2 fewer loaves of bread will be sold per day. let x represent the number of $0.50 increases in the cost of a loaf of bread. for what number of $0.50 increases in the cost of a loaf of bread will the grocer's generated revenue be greater than zero?