Answer:
394,549
Explanation:
this problem can be solved applying the concept of annuity, keep in mind that an annuity is a formula which allows you to calculate the future value of future payments affected by an interest rate.by definition the future value of an annuity is given by:
[tex]s_{n} =P*\frac{(1+i)^{n}-1 }{i}[/tex]
where [tex]s_{n}[/tex] is the future value of the annuity, [tex]i[/tex] is the interest rate for every period payment, n is the number of payments, and P is the regular amount paid. so applying to this particular problem, we have:
[tex]s_{21} =9,000*\frac{(1+0.068)^{21}-1 }{0.068}[/tex]
[tex]s_{21} =394,549[/tex]
