I could use some help on this, thank you!​

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Can someone pls ! pls answer all. no explanation needed..

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?