1. What is the present value on January 1, 2016, of $30,000 due on January 1, 2020, and discounted at 10% compounded annually?
2. What is the present value on January 1, 2016, of $40,000 due on January 1, 2020, and discounted at 11% compounded semiannually?
3. What is the present value on January 1, 2016, of $50,000 due on January 1, 2020, and discounted at 16% compounded quarterly?

I have already asked this question on course hero and the answers provided to me were incorrect. They were as follows:

1. $20,490.40
2. $26,063.95
3. $26,695.41