3. Middle Creek High is selling tickets to a choral performance. On the first day of ticket sales the school sold 12 adult tickets and 3 child tickets for a total of $198. The school took in $172 on the second day by selling 3 adult tickets and 13 child tickets. Find the price of an adult ticket and the price of a child ticket. Make sure to set up the system first, and answer the question using proper units and a sentence. Enter your answer as a=# and c=#. Submit your work. *