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Which graph represents the following piecewise defined function?

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

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?