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 $784 at the end of 1 year. % b. You lend $700 and the borrower promises to pay you $784 at the end of 1 year. (3) % c. You borrow $54,000 and promise to pay back $239,515 at the end of 9 years. % d. You borrow $15,000 and promise to make payments of $4,058.60 at the end of each year for 5 years. (3)