document.write( "Question 1157482: Find how long it takes a $1200 investment to earn $600 interest if it is invested at 5% interest compounded quarterly. \n" ); document.write( "

Algebra.Com's Answer #780357 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "$600 interest means the original $1200 has grown to $1800.

\n" ); document.write( "If t is the number of years and the interest is 5% compounded quarterly, then

\n" ); document.write( " $\"1800+=+1200%281%2B.05%2F4%29%5E%284t%29\"$

\n" ); document.write( "Graph using a graphing calculator, or solve using logarithms....

\n" ); document.write( " $\"1.5+=+1.0125%5E%284t%29%7D%7D%0D%0A%7B%7B%7Blog%28%281.5%29%29+=+4t%2Alog%28%281.0125%29%29\"$
\n" ); document.write( " $\"4t+=+log%28%281.5%29%29%2Flog%28%281.0125%29%29\"$

\n" ); document.write( "You can finish....

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