What is 877.71 rounded to the nearest tenth

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?

What expression is equivalent to (84+16)

Which shows how to solve the equation 3/4x=6 for x in one step?