The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below
tickets sold and the total cost of the tickets for three performances.
3
126
102
om
g op
18 6 162
15 5 85
0
Which of the following is the result of performing the row operation - 2R1+R2 R2 on this matrix?
3
12
6
102
0 -6 -6 -42
cr
0
15
5.
e
85
0
-6
-6-42
6 18
6
162