Carlos' school is selling tickets to a play. On the first day of ticket sales, the school sold 6 adult tickets and 9 student tickets for a total of $129. The school took in $168 on the second day by selling 12 adult tickets and 8 student tickets. The play is a cross between "Death of a Salesman" and "The Little Mermaid" and it is deeply terrible. Find the price of an adult ticket and the price of a student ticket. Group of answer choices