1. An individual is borrowing $20,000 on a 60- month loan. The interest rate is .5% per month, what is the monthly payment?

2. An investor invests $2,500 per year for 30 years. If they can earn 5% per year, how much will they have in 30 years?

3. A grandparent was to pay for college in 20 years. He expects it to cost $125,000. Assuming her earns 4% per year, how much should he invest today?

4. An investor wants to have $50,000 per year for 20 years in retirement. At an interest rate of 6%, how much should be invested?