Exponential Growth/Decay

The mass of a radioactive substance follows an exponential decay model, with a decay rate of 5% per day. Find the half-life of this substance (that is, the time it takes for one-half the original amount in a given sample of this substance to decay).

Do not round any intermediate computations, and round your answer to the nearest hundredth.

Answer in PDF (read only).
Answer in ODT (read/write).

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