As per the problem
The auditorium hold 200 people.
Also the tickets cost $12 at the door and $8.50 if purchased in advance.
The drama club has a goal of selling at least $1000 worth of tickets to Saturday's show.
Let total number of tickets purchased at door be x and the number of tickets purchased in advance be y.
Then revenue for x tickets =12x
Revenue from y tickets=8.50y
Hence the inequality can be set up as below

