Answer: The system of equations that represent this situation is
x = 2y
5x + 3y = 1131
Explanation:
Let x represent the number of adult tickets sold on the first night of the play.
Let y represent the number of student tickets sold on the first night of the play.
On the first night of the play, twice as many adults attended the play as students. This means that
x = 2y
Students tickets cost $3 and adults tickets cost $5. The total amount of money earned from tickets sales was $1,131. This means that
5x + 3y = 1131- - - - - - - - - 1