Pls help oh my God pls

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x