document.write( "Question 178871: A bacteria culture doubles in size every 8 hrs. The culture starts with 150 cells. How many will there be after 24 hrs? 72hrs? \n" ); document.write( "

Algebra.Com's Answer #133814 by Mathtut(3670) $\"\"$ $\"About$

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if x is the initial amount
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\n" ); document.write( " $\"x%282%29%5En\"$ where n is the number of times it doubles.
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\n" ); document.write( "24/8=3 times that it doubles
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\n" ); document.write( "so
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\n" ); document.write( "150(2)^3=1200 cells after 24 hours
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\n" ); document.write( "72/8=9
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\n" ); document.write( "150(2)^9=150(512)=76800 cells after 72 hours \n" ); document.write( "

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