fn contro matricies -14 even; pg 177: 8-18 ev same dimensions have any dime 3. Use the table below that shows the purchase price and selling price of stock for three companies. For a class project, Joel "bought" shares of stock in three companies. He bought 150 shares of a utility company, 100 shares of a computer company, and 200 shares of a food company. At the end of the project he "sold" all of his stocks. Company Purchase Price (per share) Selling Price (per share) Utility $54.00 $55.20 Computer $48.00 $58.60 Food $60.00 $61.10 a) Use matrix multiplication to find the total amount he spent for the stock. b) Use matrix multiplication to find the total amount he received for selling the stock. c) Use matrix operations to find how much money Joel made. sumug and ewodds woled aldid ant 4. Give an example of two matrices A and B whose product is commutative so that AB = BA