Part $1$ of $4$

Points: $0$ of $1$

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 $$360\mathrm{.}00$ and receive $$874\mathrm{.}52$ in $9$ years.

b$.$ Invest $$3,800,00$ and receive $$10,112\mathrm{.}87$ in $17$ years.

c$.$ Invest $$30,362\mathrm{.}98$ and receive $$140,000\mathrm{.}00$ in $20$ years.

d$.$ Invest $$32,271\mathrm{.}33$ and receive $$1,100,000\mathrm{.}00$ in $50$ years.

a$.$ What annual rate of return will Keiko earn if she invests $$360\mathrm{.}00$ today and receives $$874\mathrm{.}52$ in $9$ years?

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