Find the Present Value of the Future Value $$\mathrm { S } ( \mathrm { t } ) = \mathrm { se } ^ { - 0.018 \mathrm { t } }$$

Multiple Choice

Find the present value of the future value.
- $$\mathrm { S } ( \mathrm { t } ) = \mathrm { se } ^ { - 0.018 \mathrm { t } }$$ , where s is the initial amount in grams and t is the time in years since this initial amount was present. If you have a 76-gram piece of this element,
How many grams will you have 4 years from now? Round your answer to the nearest tenth of a
Gram.

A) 0.9 g
B) 81.7 g
C) 70.7 g
D) 37.3 g