5. Find the present value of the following ordinary annuities.
(Notes: If you are using a financial calculator, you can enter the
known values and then press the appropriate key to find the unknown
variable. Then, without clearing the TVM register, you can
"override" the variable that changes by simply entering a new value
for it and then pressing the key for the unknown variable to obtain
the second answer. This procedure can be used in many situations,
to see...