refer to the following: Cell phone companies charge users

Chapter 10, Problem 58

(choose chapter or problem)

refer to the following: Cell phone companies charge users based on the number of minutes talked, the number of text messages sent, and the number of megabytes of data used. The costs for three cell phone providers are given in the table:The cost to a cell phone user for each of the three providers is the product of the matrix X whose rows are the rows of data in the table and the matrix where m is the number of minutestalked, t is the number of text messages sent, and d is the megabytes of data used. Telecommunications/Business. A local business is looking at providing an employee a cell phone for business use. The business solicits estimates for their normal monthly usage from three cell phone providers. Company 1 estimates the cost to be $82.50, Company 2 estimates the cost to be $85.00, and Company 3 estimates the cost to be $92.50. Use the inverse matrix technique to nd the normal monthly usage for the employee.