Please answer all questions.

#4 Derek borrows $323,959.00 to buy a house. He has a 30-year mortgage with a rate of 4.21%. After making 141.00 payments, how much does he owe on the mortgage? unanswered Submit not_submitted Attempts Remaining: Infinity Answer format: Currency: Round to: 2 decimal places. #1 The market price of a semi-annual pay bond is $987.78. It has 20.00 years to maturity and a coupon rate of 6.00%. Par value is $1,000. What is the yield to maturity? Submit unanswered not_submitted Attempts Remaining: Infinity 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)) #1 The market price of a semi-annual pay bond is $956.39. It has 16.00 years to maturity and a coupon rate of 7.00%. Par value is $1,000. What is the effective annual yield? unanswered Submit not_submitted Attempts Remaining: Infinity 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))