(4 points) Certain radioactive material decays in such a way that the mass remaining after t…

(4 points) Certain radioactive material decays in such a way that the mass remaining after t years is given by the function m(t) = 320e-0.025t where m(t) is measured in grams. (a) Find the mass at time t = 0. Your answer is (b) How much of the mass remains after 45 years? Your answer is