At store A, 3 pounds of apples cost $12. At store B, the cost is given by y = 2x where y is the cost in dollars and x is the number of pounds of apples. The cost of apples at store C is shown in the graph. 0 15 12 Cost (dollars) 9 3 5 Weight (pounds) Answer the questions to find out which store's apples are the least expensive. 1. What is the unit price of apples at store A? Explain how you found this unit price. Writo your answer in the snare below