can you just check my caluclations for me please?

Thank you!

1. What is the present value of each of the following single amounts: $10,000 to be received in 10 years at 8% compounded annually? $10,000 to be received in 10 years at 6% compounded annually? $10,000 to be received in 15 years at 8% compounded annually $10,000 to be received in 15 years at 6% compounded annually? a. b. c. d. 2. What is the future value of a single amount of $2,000 invested for 10 years at 5% compounded annually? $2,000 invested for 10 years at 8% compounded annually? $2,000 invested for 15 years at 5% compounded annually? $2,000 invested for 15 years at 8% compounded annually? a. b. c, d. 3. What is the future value of an amount of: a. $2,000 invested each year for 25 years at 5% compounded annually? $2,000 invested each year for 25 years at 8% compounded annually