# Logarithmic Equations Word Problems : Radioactive Decay

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The amount of radioactive element R in grams present t years from now is given by the formula R = 10.9e-0.003t. How much of R is present initially? How much is left after 35 years (to the nearest tenth of a gram)?

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#### Solution Summary

Radioactive decay is investigated. The solution is detailed and well presented.

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