Really need help with these parts. thanks

A bank offers 6.00% on savings accounts. What is the effective annual rate if interest is compounded semi-annually? Submit Answer format: Percentage Round to: 4 decimal places (Example: 9.2434%, % sign required. Will accept decimal format rounded to 6 decimal places (ex: 0.092434) Derek has the opportunity to buy a money machine today. The money machine will pay Derek $26,500.00 exactly 3.00 years from today. Assuming that Derek believes the appropriate discount rate is 10.00%, how much is he willing to pay for this money machine? Submit Answer format: Currency: Round to: 2 decimal places. Assume the nominal rate of return is 6.56% and the inflation rate is 5.47%. Find the real rate of return using the exact formula. Submit Answer format: Percentage Round to: 0 decimal places (Example: 9%, % sign required. Will accept decimal format rounded to 2 decimal places (ex: 0.09))