A deposit of exist8500 is made in an account that earns 7 in
     A deposit of exist8500 is made in an account that earns 7% interest compounded quarterly. The balance in the account after n quarters is given by the following sequence. Find the balance in the account after two years.  a_n = 8500(1 + 0.07/4)^n. n = 1, 2, 3, ..  The balance after two years is exist  (Do not round until the final answer. Then round to the nearest cent as needed.) 
  
  Solution
an = 8500(1+ 0.07/4)^n
after two years : n = 2
a2 = 8500(1+ 0.07/4)^2 = 9105.4125
= 9105.41

