Interest rate $($with changing years$).$ Keiko is looking at the following investment choices and wants to know what annual rate of return each choice produces.

a$.$ Invest $$350\mathrm{.}00$ and receive $$888\mathrm{.}45$ in $10$ years.

b$.$ Invest $$3,600\mathrm{.}00$ and receive $$12,479\mathrm{.}08$ in $14$ years.

c$.$ Invest $$32,234\mathrm{.}46$ and receive $$140,000\mathrm{.}00$ in $20$ years.

d$.$ Invest $$32,052\mathrm{.}17$ and receive $$1,500,000\mathrm{.}00$ in $30$ years.

a$.$ What annual rate of return will Keiko earn if she invests $$350\mathrm{.}00$ today and receives $$888\mathrm{.}45$ in $10$ years?

$\%($Round to two decimal places.$)$