I want to confirm if my answers are right:

9. What is the future value of a principal of $20,000 with a 6% interest rate, and 18 years to maturity?

Not compounded: 41,600

Compounded: 57,965.60

10. What is the future value of a principal of $1,000 with a 3% interest rate compounding monthly, and 5 years to maturity?

1,161.83

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

9. What is the future value of a principal of $20,000 with a 6% interest rate, and 18 years to maturity? 10. What is the future value of a principal of $1,000 with a 3% interest rate compounding monthly, and 5 years to maturity? 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? 9. What is the future value of a principal of $20,000 with a 6% interest rate, and 18 years to maturity? 10. What is the future value of a principal of $1,000 with a 3% interest rate compounding monthly, and 5 years to maturity? 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