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U https://www-awa.aleks.com/aleksogi/x/1sl.exe/10_u-IgNsikr7j8P3jH-BIZFhIIPLUGE exe/lo u-IqNslkr7j8P3 H-IBIZFhIIPLUg ... V Q Search College Algbra SP18 - 903 - Online Practice Test 3 | 8 of 20 O O O O O O O O O O O O D The mass of a radioactive substance follows a continuous exponential decay model. A sample of this radioactive substance has an initial mass of 613 kg and decreases continuously at a relative rate of 18% per day. Find the mass of the sample after five days. Do not round any intermediate computations, and round your answer to the nearest tenth. ll kg | | ? Submit AS © 2018 McGraw-Hill Education All Rights Reserved. Torms of Use | Privacy é 2 hpw]

Explanation / Answer

equation for continuous decay is

P = Po e^-rt

P = 613 e^-(.18t )

mass of sample after 5 days

plugging t = 5

P = 613 e^-(.18*5 )

P = 249.2

mass of sample after 5 days = 249.2 kg

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