We want the ratio of orange seashells to pink seashells to be 3: 7. we should use 40 shells. how many orange shells should be paint.

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?