document.write( "Question 479450: The half-life of a certain radioactive material is 85 days. An initial amount of the material has a mass of 801 kg. Write an exponential function that models the decay of this material.\r
\n" ); document.write( "\n" ); document.write( "Then calculate how much radioactive material remains after 10 days . Round your answer to the nearest thousandth \n" ); document.write( "

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The half-life of a certain radioactive material is 85 days.
\n" ); document.write( " An initial amount of the material has a mass of 801 kg.
\n" ); document.write( " Write an exponential function that models the decay of this material.
\n" ); document.write( ":
\n" ); document.write( "the radioactive decay formula A = Ao*2^(-t/h), where
\n" ); document.write( "A = Amt after t time
\n" ); document.write( "Ao = initial am
\n" ); document.write( "h = half-life of substance
\n" ); document.write( "t = time of decay
\n" ); document.write( "A = 801*2^(-t/85)
\n" ); document.write( ";
\n" ); document.write( "Then calculate how much radioactive material remains after 10 days .
\n" ); document.write( " Round your answer to the nearest thousandth
\n" ); document.write( "A = 801*2^(-10/85)
\n" ); document.write( "A = 801*.9217
\n" ); document.write( "A = 738.273 kg after 10 days \n" ); document.write( "

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