Provide the correct formula for each question:

1. Helen will receive $45,000 per year for 6 years. If her required annual rate of return is 8.1%, what is current value of the received amount?

2. Taylor will receive $45,000 per year for 6 years. Payments will be received monthly, with the first payment being made now. If her required annual rate of return is 8.1%, what is current value of the received amount?

3. Ben wants to purchase a new condominium and borrow $210,000. He will pay that amount over 15 years at an annual 4.5% rate. What will Ben's monthly mortgage payment be?

4. Waffles inc. just sold one of its businesses. It will receive $1,300,000 annually for the next 15 years, with the first payment being received now. Its rate of return is 13%. What is the sales price of the business?

5. Cassandra has signed a 5-year purchase agreement for a new car selling for $22,000. If the annual interest rate is 3.8%, what will be the amount of the monthly payments.