document.write( "Question 768032: can some one help me solve this problem please\r
\n" ); document.write( "\n" ); document.write( "A certain virus has an average doubling time of 28.5 minutes in the human body. How long does it take 1 virus to grow to a billion (1E9) viruses? Time in hours (1 decimal)
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Algebra.Com's Answer #468026 by ankor@dixie-net.com(22740)\"\" \"About 
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A certain virus has an average doubling time of 28.5 minutes in the human body.
\n" ); document.write( " How long does it take 1 virus to grow to a billion (1E9) viruses?
\n" ); document.write( " Time in hours (1 decimal)
\n" ); document.write( "\"2%5E%28t%2F28.5%29+=+10%5E9\"
\n" ); document.write( ":
\n" ); document.write( "\"t%2F28.5\"*log(2) = 9
\n" ); document.write( "\"t%2F28.5\" = \"9%2Flog%282%29\"
\n" ); document.write( "\"t%2F28.5\" = 29.9
\n" ); document.write( "t = 28.5 * 29.9
\n" ); document.write( "t = 852 min
\n" ); document.write( ":
\n" ); document.write( "\"852%2F60\" = 14.2 hrs
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