Adding expressions one week, gabriel bought 2 bags of beans and 3 bags of rice. the next week, he bought 4 bags of beans and 1 bag of rice. let b represent the cost of each bag of beans and r represent the cost of each bag of rice. simplify the expression for the total cost, shown below. (2b + 3r) + (4b+ r) 2b + r 5b + 5r 6b + 2r 6b + 4r