At a store, Mary pays $34 for 2 pounds of apples, 1 pound of berries, and 4 pounds of cherries. Tom pays $35 for 3 pounds of apples, 2 pound of berries, and 2 pounds of cherries. Lee pays $49 for 5 pounds of apples, 3 pound of berries, and 2 pounds of cherries. Write a system to represent this situation.