1. A homebuyer is taking out a mortgage with a balloon payment. The loan amount is $100,000 and the annual interest rate is 5%. The homebuyer will make equal monthly payments for 5 years except the last payment will include an additional payment of $20,000. How much will the equal monthly payments be? Show your work.

2. A project requires an initial cash outlay of $40,000 and has expected cash inflows of $12,000 annually for 7 years. The cost of capital is 10%. What is the project's NPV? Show your work. 

3. A project requires an initial cash outlay of $60,000 and has expected cash inflows of $15,000 annually for 8 years. The cost of capital is 10%. What is the project's payback period? Show your work.

4. A project requires an initial cash outlay of $60,000 and has expected cash inflows of $15,000 annually for 8 years. The cost of capital is 10%. What is the project's IRR? Show your work.