The function f(t)=1200 represents the rate of flow of money in dollars per year. Assume a 20-year period at 85% compounded continuously. Find (a) the present value, and (b) the accumulated amount of money flow at T=20 20 1200-(0.05) dt The present value is (Do not round until the final answer. Then round to the nearest cent as needed.) Set up the integral used to find the accumulated amount of money flow at t=20 The accumulated amount of money flow at t=5 is $ (Do not round until the final answer. Then round to the nearest cent as needed.)