document.write( "Question 1170824: A radioactive element decays at a rate of 19% / year. Initially, there is 10,000 lbs of this material. How much will be left after 21 years? (round to two decimal places)\r
\n" ); document.write( "\n" ); document.write( " A.7.14 lbs\r
\n" ); document.write( "\n" ); document.write( " B.About zero lbs\r
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\n" ); document.write( "\n" ); document.write( "D.119.73 lbs
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Algebra.Com's Answer #795700 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
This would be 10000(0.81)^21. The 0.81 is the amount left of the previous year with each passing year
\n" ); document.write( "=119.73 lbs.
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