The propeller of an airplane is 9 feet in diameter. what is the speed of the tip of a propeller blade if the angular velocity of the propeller is 50 radians per second? 11 ft/sec 22.5 ft/sec 225 ft/sec

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?