The radioactive substance uranium-240 has a half-life of 14 hours. The amount A (t) of a sample of uranium-240 remaining (in grams) after t hours is given by the following exponential function. 1 A (t) = 1200 (€) 14 Find the amount of the sample remaining after 7 hours and after 60 hours. Round your answers to the nearest gram as necessary. Amount after 7 hours: grams Amount after 60 hours: grams

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