QUICK HELP The last one says
D. Mr. benson should buy 16 calculators since his median class size is 28 and he probably won’t have more than 32 students. He can buy 16 calculators for $158.08.

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

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?