Hi I need help with questions 5,7,9,10 please

5. [0/0.17 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 5.1.028.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Evaluate the given expression. Take 0 x 1 w A= and C = O 8 Z 6 8AT - CT9. [-/0.18 Points] DETAILS WANEFMAC7 5.1.039. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 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 January, the central computer showed the following books in stock. Hard Soft Plastic San Francisco 3,000 4,000 6,000 Los Angeles 3,000 4,000 1,000 Suppose its sales in January were as follows: 600 hardcover books, 1,200 softcover books, and 2,000 plastic books sold in San Francisco, and 300 hardcover, 200 softcover, and 400 plastic books sold in Los Angeles. Write the given inventory table as a 2 x 3 matrix. Write the given sales figures as a similar matrix. Compute the inventory remaining in each store at the end of January. Need Help? Read It Watch It 10. [0.48/1 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 5.1.040. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Inventory A certain bookstore chain has two stores, one in San Francisco and one in Los Angeles. It stocks three kinds of books: hardcover, softcover, and plastic (for infants). At the beginning of January, the central computer showed the following books in stock. Hard Soft Plastic San Francisco 2,000 2,000 6,000 Los Angeles 2,000 6,000 2,000 Its sales in January were as follows: 700 hardcover books, 1,300 softcover books, and 2,000 plastic books sold in San Francisco, and 400 hardcover, 200 softcover, and 500 plastic books sold in Los Angeles. The bookstore chain actually maintained the same sales figures for the first 6 months of the year. Each month, the chain restocked the stores from its warehouse by shipping 600 hardcover, 1,400 softcover, and 1,400 plastic books to San Francisco and 500 hardcover, 500 softcover, and 500 plastic books to Los Angeles. (a) Use matrix operations to determine the total sales over the 6 months, broken down by store and type of book. Hard Soft Plastic San Francisco 4200 7800 12000 Los Angeles 2400 1200 3000 (b) Use matrix operations to determine the inventory in each store at the end of June. Hard Soft Plastic San Francisco 300 X 700 X 1400 X Los Angeles 500 X 500 X 500 X7. [0/0.17 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 5.1.035. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use technology to evaluate the given expression. Take 1.6 -2.31 5.1 20 40 50 A = 44.4 0 12.8 and C = -20 -40 -50 (2.1A - 2.3C)T -939.91