Inventory A certain bookstore chain has two stores, one in San Francisco and one in Los Angeles, It stocks three kinds of book: hardcover, softcover, and plastic (for infants). At the beginning of Janvary, the central computer showed the following books in stock. Suppose its sales in January were as follows: 600 hardcover books, 1,200 softcover books, and 1,900 plastic books sold in San Francisco, and 400 hardcover, 200 softcover, and 500 plastic books sold in Los Angeles. Write the given inventory table as a 23 matrix. x Write the given sales figures as a similar matrix. Compute the inventory remaining in each store at the end of January