Three different high schools plan to order the same three text books. School A p

Question

Three different high schools plan to order the same three text books. School A plans to order 30 of book 1, 40 of book 2, 90 of book 3. School B plans to order 80 of book 1, 20 of book 2, 80 of book 3. School C plans to order 70 of book 1, 90 of book 2, 10 of book 3. The cost of book 1 is $15 per copy, the cost of book 2 is $20 per copy, and the cost of book 3 is $25 per copy. What matrix product displays the cost to each school of buying the textbooks? Display the two matrices which must be multiplied and their product.

Explanation / Answer

From the known choices (B) and (C) are appropriate answers.

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