A theater wants to take in at least $2,000 for a particular showing of a movie.
Children's tickets cost $5 each and adult tickets cost $10 each. Write an
inequality describing the number of tickets that will allow the theater to meet
their minimum. Let x = the number of children's tickets sold and y = the
number of adult tickets sold.

15xy 2000
5x+10y < 2000
5y + 10x ≥ 2000
5x+10y ≥ 2000