Problems concern the future of the US Social Security Trust Fund, out of which pensions are paid.

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Problems concern the future of the US Social Security Trust Fund, out of which pensions are paid. Figure 5.61 shows the rates (billions of dollars per year) at   which income.

I(t), from  taxes and interest is projected to flow into the fund and at which expenditures, E(t), flow out of the fund. Figure 5.62 shows the value of the fund as a function of time.

Decide when the value of the fund is projected to be a maximum using

(a) Figure 5.61 

(b) Figure 5.62

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Applied Calculus

ISBN: 9781119275565

6th Edition

Authors: Deborah Hughes Hallett, Patti Frazer Lock, Andrew M. Gleason, Daniel E. Flath, Sheldon P. Gordon, David O. Lomen, David Lovelock, William G. McCallum, Brad G. Osgood, Andrew Pasquale

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