please help with this equation.

86. Purchasing Costs The Bread Box, a small neighborhood bakery, sells four main items: sweet rolls, bread, cakes, and pics. The amount of each ingredient (in cups. except for eggs) required for these items is given by matrix A. Eggs Flour Sugar Shortening Milk Rolls (doz) + Bread (loaf ) -it -14 - -in Cake + m - Pic (crust) The cost (in cents) for each ingredient when purchased in large lots or small lots is given by matrix B. Coal Large Lot Small Lot Eggs Flour Sugar Shortening Milk (a) Use matrix multiplication to find a matrix giving the comparative cost per bak. ery item for the two purchase options