The radioactive substance cesium-137 has a half-life of 30 years. The amount A (r) (in...

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The radioactive substance cesium-137 has a half-life of 30 years. The amount A (r) (in grams) of a sample of cesium-137 remaining after years is given by thefollowing exponential function.A (t)=381Find the initial amount in the sample and the amount remaining after 50 years.Round your answers to the nearest gram as necessary.Kimb30

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