The balance in an investment account years t after the account is opened is given by 9500(1.062t). Compute the average rate of change for 3.5 t 5.5.(Round your answer to two decimal places.) A balance/At=?? Interpret your result in this context. From 3.5 to 5.5 years after being opened, the balance of the account "??" at an average rate of $ "??" per year.