In January, the Left Coast Bookstore chain sold 700 hardcover books, 1,800 softcover books, and 2,500 plastic books in San Francisco; it sold 300 hardcover, 300 softcover, and 500 plastic books in Los Angeles. Hardcover books sell for $30 each, softcover books sell for $10 each, and plastic books sell for $15 each. Suppose that each hardcover book costs the stores $10, each softcover book costs $5, and each plastic book costs $10. Use matrix operations to compute the total profit at each store in January.

San Fran. $

LA $