Geometry multiple choice. It’s timed plz help

Write an algebraic expression for the word expression the quotient of c and 8

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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?