HELP PLEAS! Systems of equations can be used to represent a variety of real world situations. For this discussion, describe the method of solving systems that you believe is the most efficient and explain why. Then, describe a real-world situation where a system of equations could be easily solved using the method that you chose and write the system of equations that represents the situation.

A. 3,600 hard cover, 7,800 soft cover and 12,000 plastic cover books will be sold in San Francisco and 2,400 hard cover, 1,800 soft cover and 2,400 plastic cover books will be sold in Los Angeles.

B.400 hard cover, 3,600 soft cover and 2,400 plastic cover books will be left over in San Francisco and 1,600 hard cover, 7,200 soft cover and 3,600 plastic cover books will be left over in Los Angeles.

Step-by-step explanation:

Let the First column of the matrix represent hard cover books, the second represent soft cover books and the third represents plastic cover books

For the rows, let the first row represent the store in San Francisco and the second row, the store in Los Angeles;

To determine the sales using matrix operations

The matrix representing the sales is;

( The matrices are attached down below)

The sales for 6months will be

3,600 hard cover, 7,800 soft cover and 12,000 plastic cover books will be sold in San Francisco and 2,400 hard cover, 1,800 soft cover and 2,400 plastic cover books will be sold in Los Angeles.

Using Matrix operations, the total inventory at the end of 6 months will be;

Total inventory at the end of 6 months = Stock at the beginning of January + (6*stocks during the months) - (Total sales)

=400 hard cover, 3,600 soft cover and 2,400 plastic cover books will be left over in San Francisco and 1,600 hard cover, 7,200 soft cover and 3,600 plastic cover books will be left over in Los Angeles.