Question: A breeder reactor converts stable uranium-238 into the isotope plutonium-239. The decay of this isotope is given by A(t) = A0e-0.00002876t where A(t) is the

A breeder reactor converts stable uranium-238 into the isotope plutonium-239. The decay of this isotope is given by
A(t) = A0e-0.00002876t
where A(t) is the amount of the isotope at time t, in years, and A0 is the original amount.
(a) If A0 = 500 lb, how much will be left after a human lifetime (use t = 80 years)?
(b) Find the half-life of this isotope.

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