The radioactive substance cesium-137 has a half-life of 30 years. The amount A (1) (in grams) of a sample of cesium-137 remaining after years is given by the following exponential function. - 862 (+-)50 A (t)=862 Find the initial amount in the sample and the amount remaining after 50 years. Round your answers to the nearest gram as necessary. Initial amount: grams Amount after 50 years: grams

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