please help with these. thank you.

Question 7 (10 points) Assume that you borrow $50,000 for five years at an interest rate of 4.4% per year. If the loan has semiannual payments, what is the amount of principal in the first payment? 1) $4,348.69 2) $4,757.86 3) $4,466.75 4) $4,622.36 5) $4,524.73 What annual interest rate is required for an amount to double in seven years? 1) 8.2% 2) 9.8% 3) 11.2% 4) 10.4% 5) 9.3%