1.) The force of interest is 8(t) = 0.6(1+t) 2. Calculate the present value of the following: (a) An increasing 3-year annuity that pays 1 at time 1, 2 at time 2, and 3 at time 3. (b) A decreasing continuous 2-year deferred 3-year annuity that has a time-t payment rate of C = 5(1 + t) 2 for 2 t 5