This exerrise uses the radioactive decay model.
The half-1fe of radium-226 is 1600 years, Suppose we have a 27-mg sample,
(a) Find a function m(t)=m_0 2^-t / h that models the mass remaining after t years.
m(t)=4942
(b) Find a function m(t)=me^e-1 t that models the mass remaining after t years. (Round your r value to six decimal places.)
m(t)=
(c) How much of the sample will remain after 3000 years? (Round your answer to one decimal place.)
(d) After how many years will only 16 of the sample remain? (Round your answer to one decimal place.)
