4a. Suppose a company is considering the purchase of equipment that costs $35,000 today. The equipment is expected to help the company generate additional cash sales of $9,750 at the end of each period for the next 4 periods. Using an interest rate of 6%, what is the present value of the expected return and should the company purchase the equipment?

4b. Assume the same facts as in Requirement 4a except the interest rate is 3%. What is the present value of the expected return and should the company purchase the equipment? Note: Round your answer to 2 decimal places.

5a .A company wishes to purchase equipment in the future that is expected to cost $70,000 at that time. The company places $9,750 into an investment account at the end of each period for 6 periods. If the account earns 9% each period, how much will the account have by the end of the sixth period and will there be enough to make the purchase? Note: Round your answer to 2 decimal places.

5b. Assume the same facts as in Requirement 5a except the interest rate is 6%. How much will the account have by the end of the sixth period and will there be enough to make the purchase? Note: Round your answer to 2 decimal places.