At a movie theater, the price of a child's ticket is $9 and the price of an adult's ticket is $12. On Friday, the theater sold 820 tickets total and made $9,222. Create a matrix equation to represent the system, using x to represent the number of children's tickets sold and y to represent the number of adults' tickets sold. A matrix with 2 rows and 2 columns, where row 1 1 and 1, and row 2 is 9 and 12, which is multiplied by another matrix with 2 rows and 1 column, where row 1 is 820 and row 2 is 9222, which equals another matrix with 2 rows and 1 column, where row 1 is x, and row 2 is y. A matrix with 2 rows and 2 columns, where row 1 is 1 and 9, and row 2 is 1 and 12, which is multiplied by another matrix with 2 rows and 1 column, where row 1 is 820 and row 2 is 9222, which equals another matrix with 2 rows and 1 column, where row 1 is x, and row 2 is y. A matrix with 2 rows and 2 columns, where row 1 is 1