Question: Help Use the exponential decay model, A = Apekt, to solve the following. The half-life of a certain substance is 30 years. How long will

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Use the exponential decay model, A = Apekt, to solve the following. The half-life of a certain substance is 30 years. How long will it take for a sample of this substance to decay to 79% of its original amount? . . . It will take approximately for the sample of the substance to decay to 79% of its original amount. (Round to one decimal place percent years percent per year

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