The Music Store’s inventory of recordings is:
Country and Western: female, 848; male, 145; groups, 969
Classic oldies: female, 159; male, 37; groups, 246
The Sound Shop’s inventory of recordings is:
Country and Western: female, 753; male, 252; groups, 639
Classic oldies: female, 342; male, 19; groups, 113
(a) Represent the Music Store’s inventory in a matrix A and the Sound Shop’s inventory in a matrix B.
(b) If the stores merge, represent the merged inventory by adding the matrices.
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