This one the last one

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?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?