Jackie goes to the mall every weekend with her friends. last week, the group spent $28.00 on 2 salads and 4 fruit smoothies. this week, the group spent $38.00 on 3 salads and 5 fruit smoothies. let x represent the cost of a salad and let y represent the cost of a smoothie. 2x + 4y = 28 3x + 5y = 38