26) In the formula A(t) = Aoekt, A is the amount of radioactive material remaining from...

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26) In the formula A(t) = Aoekt, A is the amount of radioactive material remaining from an initial amount Ao at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year. 26) In the formula A(t) = Aoekt, A is the amount of radioactive material remaining from an initial amount Ao at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year.