EFFECTIVE RATE OF INTEREST Find the interest rates earned on each of the following. Round each answer to two decimal places. a. You borrow $720 and promise to pay back $792 at the end of 1 year. b. You lend $720 and the borrower promises to pay you $792 at the end of 1 year. C. You borrow $93,000 and promise to pay back $239,804 at the end of 14 years. d. You borrow $10,000 and promise to make payments of $2,504.60 at the end of each year for 5 years