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The function y = 100e-0.045t models the amount, y, of radioactive material remaining, in grams, as a function of time t, in days. Calculate

The function y = 100e-0.045t models the amount, y, of radioactive material remaining, in grams, as a function of time t, in days. Calculate the half-life of this radioactive material. Round your answer to the nearest tenth. B III HND

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