Effective Rate of interest Find the interest rates earned on each of the following. Round each answer to two decimal places.

a. You borrow $690 and promise to pay back $759 at the end of 1 year.

b. You lend $690 and the borrower promises to pay you $759 at the end of 1 year.

c. You borrow $83,000 and promise to pay back $455,871 at the end of 13 years.

d. You borrow $18,000 and promise to make payments of $4,390.00 at the end of each year for 5 years.