document.write( "Question 638910: The half-life of a certain radioactive material is 32 days. An initial amount of the material has a mass of 361 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 5 days. Round your answer to the nearest thousandth. \n" ); document.write( "
Algebra.Com's Answer #402491 by ankor@dixie-net.com(22740)\"\" \"About 
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The half-life of a certain radioactive material is 32 days.
\n" ); document.write( " An initial amount of the material has a mass of 361 kg.
\n" ); document.write( " Write an exponential function that models the decay of this material.
\n" ); document.write( " Find how much radioactive material remains after 5 days.
\n" ); document.write( " Round your answer to the nearest thousandth.
\n" ); document.write( ":
\n" ); document.write( "The radio active decay formula: A = Ao*2^(-t/h); where
\n" ); document.write( "A = remaining amt after t time
\n" ); document.write( "Ao = initial amt
\n" ); document.write( "t = time of decay
\n" ); document.write( "h = half-life of the substance
\n" ); document.write( ":
\n" ); document.write( "A = 391*2^(-5/32)
\n" ); document.write( "using a calc find 2^(-5/32)
\n" ); document.write( "A = 391 * .89735
\n" ); document.write( "A = 350.866 kg \n" ); document.write( "
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