Please help me with math please

In the 30-60-90 triangle below side s has a length of and side r has a length

What is the measure of angle tvu shown in the diagram below

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?