document.write( "Question 1128857: Sam plants a magical beanstalk that grows exponentially when he feeds it but once Sam stops feeding the plant its height decreases by 50% per day. Sam stops feeding the beanstalk when it is 20 inches tall.
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Algebra.Com's Answer #745362 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
\"+f%28t%29+=+20%2A%28+1+-+.5+%29%5Et+\"
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