O Exponential and Logarithmic Functions Evaluating an exponential function that models a real-world situation 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. . A (:)=523G)_3% Find the initial amount in the sample and the amount remaining after 100 years. Round your answers to the nearest gram as necessary. i Initial amount: / m grams Amount after 100 years: D grams