9. Find the interest rates earned on each of the following. Round your answers to the nearest whole number. You borrow $680 and promise to pay back $714 at the end of 1 year.

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You lend $680, and the borrower promises to pay you $714 at the end of 1 year.

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You borrow $77,000 and promise to pay back $128,211 at the end of 13 years.

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You borrow $14,000 and promise to make payments of $3,693.20 at the end of each year for 5 years.

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