1000 ≤ (12x) + (8.50y) and 200≥x+y
X represents the amount of people who buy at the door and Y is those who buy in advance. The first equation if less than or equal to because they want a minimum of (AT LEAST) $1000 worth sold. The second equation is greater than or equal to because it's the maximum (ONLY HOLDS) of people that can fit.
