For every 8 pickles on a burger there are 3 onions. what is the ratio of pickles to onions

What is the value of x when x + 7 = 21?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?

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?