Certain radioactive material decays in such a way that the mass remaining after $\displaystyle {t}$ years is given by the function
$\displaystyle {m}{\left({t}\right)}={270}{\left({0.985}\right)}^{{t}}$
where $\displaystyle {m}{\left({t}\right)}$ is measured in grams.
(a) Find the mass at time $\displaystyle {t}={0}$.
Your answer is
(b) How much of the mass remains after 25 years?
Your answer is
Give your answer to two decimal places.