Find the value of a1 for an infinite geometric series with s=12 and r=1/6

Someone . me. compound probability

Acylinder has volume 45π and radius 3. what is it’s height?

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?