4(2y)+11y=15 how do i solve this equation

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Which of those sequences is a geometric sequence

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?