effective rate of interest, find the interest rates earned on each of the following: 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 at$792 at the end of 1year. c. you borrow $65,000 and promise to pay back 98,319 at the end of 14years. d. you borrow $15,000 and promised to make payments of 4,058.50 at the end of each year for 5years