An Element Decays at the Rate of S(t) $$S ( t ) = s e ^ { - 0.050 t }$$

Multiple Choice

An element decays at the rate of S(t) $$S ( t ) = s e ^ { - 0.050 t }$$ , 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 13-gram piece of this element, how many grams will
You have 3 years from now? Round your answer to the nearest tenth of a gram.

A) 0.9 g
B) 6.2 g
C) 11.2 g
D) 15.1 g