Please somebody help me​

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 the values of y: 3y^3(y^2+ 2/3y)=0

The function models the number of accidents per 50 million miles driven as a function