I want to confirm if my answers are right:

11. What is the future value of a principal of $2,000 with a 12% interest rate compounding semiannual, and 2 years to maturity?

2,530.64

12. What is the future value of a principal of $10,000 with a 12% interest rate compounding quarterly, and 1 year to maturity?

11,255

13. If the interest rate is 5%, what is the net present value of a security that pays you $10,000 in 10 years, and $10,000 in 15 years?

Not compounded: 7,500

Compounded: 10,949.98

14. If the interest rate is 6%, what is the net present value of a security that pays you $350 next year, $385 the year after, and $436 the year after that?

1,039.17

11. What is the future value of a principal of $2,000 with a 12% interest rate compounding semiannual, and 2 years to maturity? 12. What is the future value of a principal of $10,000 with a 12% interest rate compounding quarterly, and 1 year to maturity? 13. If the interest rate is 5%, what is the net present value of a security that pays you $10,000 in 10 years, and $10,000 in 15 years? 14. If the interest rate is 6%, what is the net present value of a security that pays you $350 next year, $385 the year after, and $436 the year after that