Question $13(4$ points$)$

You are told that if you invest $$11,200$ per year for $18$ years $($all payments made at the end of each year$)$ you will have accumulated $$631,000$ at the end of the period. What annual rate of return is the investment offering?

$11\mathrm{.}07\%$

$12\mathrm{.}10\%$

$9\mathrm{.}66\%$

$13\mathrm{.}45\%$

$15\mathrm{.}00\%$