Find the interest rates earned on each of the following. Round your answers to the nearest whole number. a. You borrow $700 and promise to pay back $749 at the end of 1 year. % b. You lend $700, and the borrower promises to pay you $749 at the end of 1 year. % c. You borrow $70,000 and promise to pay back $336,478 at the end of 10 years. % d. You borrow $9,000 and promise to make payments of $2,684.80 at the end of each year for 5 years. %