Suppose you are going to receive $$13,000$ per year for six years. The appropriate interest rate is $7\mathrm{.}9$ percent. a$-1.$ What is the present value of the payments if they are in the form of an ordinary annuity? $-2.$ What is the present value if the payments are an annuity due? b$-1.$ Suppose you plan to invest the payments for six years. What is the future value if the payments are an ordinary annuity? b$-2.$ Suppose you plan to invest the payments for six years. What is the future value if the payments are an annuity due?