Y-x=4 and x is three times the value of y, what is the value of x+y?

Which expresions are equivalent to the one below? check all that apply. 5x

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

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?