**Question: **A minor league ballpark seats 8000. There are box seats that cost $10, grandstand seats that cost $5 and bleacher seats that are $3 each. When all the seats

are sold, the total revenue is $37,000. The number of bleacher seats is four times the number of box seats. How many of each type of seat are there at the

ballpark? Set up both the equations and matrix.

SET UP ONLY – DO NOT SOLVE – DON’T FORGET DOCUMENTATION

## Linear Algebra: linear algebra – #29545

**Question: **The system of equations at right 4x + 2y - 3z = 18

-2x + 2y - z = 2

3x + 2z = 2

has been worked using the Gauss-Jordan technique to the matrix below. Get the next matrix and STOP.

1 1/2 -3/4 l 9/2

0 3 -5/2 l 11

0 -3/2 13/4 l -23/2

**Question: **The system of equations at right 4x + 2y - 3z = 18

-2x + 2y - z = 2

3x + 2z = 2

has been worked using the Gauss-Jordan technique to the matrix below. Get the next matrix and STOP.

1 1/2 -3/4 l 9/2

0 3 -5/2 l 11

0 -3/2 13/4 l -23/2