Hanna has 25 movies. 10 are comedies, 6 are dramas, and 9 are animated. If she chooses 3 at random, what is the probability that she will choose: 1. 3 comedies:
2. 3 animated:
3. 2 dramas and 1 comedy
4. 1 comedy, 1 drama, and 1 animated

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?