What is the value of y ?

Determine the next term in the sequence. then write the next 2 terms 4,16,28, what number do you do to get that?

Ineed with number 17 i don’t get it at alll

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?