On a certain airline, passengers can make calls from telephones provided ny the airline. A call cost $3 to connect plus $2.50 for each minute. Which equation best represents c, the total cost for a call that lasts m minutes??

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?