6. Examples of the present and annuity value of a $1 tables that you were asked to construct in lab #13 are attached to the back of this exam. Use these tables to answer the following questions. For each, show the algebraic expression used to calculate your answer, including the correct table value(s). What is the present value of a single $15,000 payment received 12 years in the future if the discount rate is 7%? (3) a. (3) b. (3) c. What is the present value of a $8,000 payment received at the end of each year for the next 17 years if the discount rate is 4%? What is the annual payment on a $20,000 loan that will be repaid over a 8-year period at 9% interest? (5) d. What is the net present value of the following cash flow stream when the discount rate is 10%? Year Cash Flow -50,000 1 100,000 2 -25,000