What is unit rate for bottler of juice

Katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress?

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

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?