Solve each problem.Le Boulangerie, a bakery, sells four main items: sweet rolls, bread, cakes, and pies. The amount of each ingredient (in cups, except for eggs) required for these items is given by matrix A. Eggs Flour Sugar Shortening Milk
= A
The cost (in cents) for each ingredient when purchased in large lots or small lots is given in matrix B. Cost
Large Lot Small Lot
= B
Suppose a day's orders consist of 20 dozen sweet rolls, 200 loaves of bread, 50 cakes, and 60 pies. Use matrix multiplication to find a matrix giving the costs under the two purchase options to fill the day's orders.
A. 
B. 
C. 
D. These matrices cannot be multiplied.
Answer: B
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A. 729 B. 2187 C. 243 D. 81
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A. 1 to 5 B. 3 to 1 C. 4 to 1 D. 5 to 1
Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 96 R22 B. Correct C. Incorrect; should be 95 R17 D. Incorrect; should be 95 R23
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A. 660 ft, 2640 ft B. 330 ft, 1320 ft C. 660 ft, 1320 ft D. 1320 ft, 2640 ft