Carbon-11 has half-life of 20 minutes. If a 50 gram sample of carbon-11 begins to decay, write a model for the amount, A, that is still radioactive after m-minutes

sample-of-carbon-11

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Carbon-11 has half-life of 20 minutes. If a 50 gram sample of carbon-11 begins to decay, write a model for the amount, A, that is still radioactive after m-minutes. Then, use your model to determine how much of the original sample is still radioactive after a half hour. Round to the nearest tenth of a gram.

Answer:

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