Calculate the present value of the following annuity streams:
a) $6,000 received each year for 5 years on the last day of each year if your investments pay 6 percent compounded annually.
b) $6,000 received each quarter for 5 years on the last day of each quarter if your investments pay 6 percent compounded quarterly.
c) $6,000 received each year for 5 years on the first day of each year if your investments pay 6 percent compounded annually.
d) $6,000 received each quarter for 5 years on the first day of each quarter if your investments pay 6 percent compounded quarterly.