At the performance of Seussical the Musical at your local high school, there are adult tickets and student/child tickets. You're trying to
remember the cost of each to tell your extended family to come see the
musical. Your friend, her mom, and her little sister paid a total of $23 on
opening night, and you know that another family paid $39 for two adults
and three students. If x is cost of adult tickets and y is cost of student
tickets, the two equations for these situations can be written as: