8
10. the numbers of students in the four
sixth-grade classes at northside school are 26,
19, 34, and 21. use properties to find the total
number of students in the four classes.

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?