A clothing manufacturer has factories in Los Angeles (LA), San Antonio (SA), and Newark (N). Sales (in thousands) during the first quarter of last year are summarized in the production matrix.
LA SA N
coat 12 13 36
shirt 25 5 26
sweater 11 8 8
During this period the selling price of a coat was $100, of a shirt $10, and of a sweater $25. Use a matrix calculation to determine the total revenue produced by each of the factories. (The matrix calculations are add, subtract, multiply by a constant, multiply two matrices and find an inverse. Show the matrices)