Please solve with explanation 20 points

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?