Which of the following isn't true about the graph of a proportional relationship? A. it is a straight line B. it passes through the origin C. it is "U" shape.

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?