Marcus needs to find out the number of cakes he can make from a 50-pound bag of flour. If it takes 2 and a half cups of flour to make one cake and there are 4 cups to every pound of flour, how many cakes can Marcus make with the bag of flour?

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6