Effective Rate of Interest

Find the interest rate (or rates of return) for each of the following situations. Round your answers to two decimal places.

You borrow $750 and promise to pay back $810 at the end of 1 year. %

You lend $750 and receive a promise to be paid $810 at the end of 1 year. %

You borrow $90,000 and promise to pay back $201,790 at the end of 12 years. %

You borrow $10,000 and promise to make payments of $3,550 at the end of each year for 3 years. %

please answer the whole question