$($Solving for r of an annuity$)$ You lend a friend $$25,000,$ which your friend will repay in $13$ equal annual end$-$of$-$year payments of $$4,000,$ with the first payment to be received $1$ year from now. What rate of return does your loan receive?

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Part $1$

The rate of return your loan will receive is

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enter your response here$\%.($Round to two decimal places.$)$