document.write( "Question 1148402: For a biology lab you are looking at the growth of a bacterial colony. If your teacher started with 1 bacterium that grows at a rate of 4% every hour and by 2:15 pm when you have class there are 1200 bacteria, what time did your teacher start the experiment? Show Work \n" ); document.write( "

Algebra.Com's Answer #769749 by josgarithmetic(39617) $\"\"$ $\"About$

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x, how long ago\r
\n" ); document.write( "\n" ); document.write( " $\"1%2A%281.04%29%5Ex=1200\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1.04%5Ex=1200\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"log%28%281.04%5Ex%29%29=log%28%281200%29%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%2Alog%28%281.04%29%29=log%28%281200%29%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=log%28%281200%29%29%2Flog%28%281.04%29%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=181\"$ $\"hours\"$
\n" ); document.write( "about 7.54 days before. \n" ); document.write( "

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