document.write( "Question 1029521: how to solve the following equation using only log of 10 or natural log:
\n" ); document.write( "12500=8400(1+r)^8 \n" ); document.write( "

Algebra.Com's Answer #644528 by Alan3354(69443) $\"\"$ $\"About$

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how to solve the following equation using only log of 10 or natural log:
\n" ); document.write( "12500=8400(1+r)^8
\n" ); document.write( "----------
\n" ); document.write( "(1+r)^8 = 125/84
\n" ); document.write( " $\"1+%2B+r+=+root%288%2C%28125%2F84%29%29\"$
\n" ); document.write( " $\"r+=+root%288%2C%28125%2F84%29%29+-+1\"$
\n" ); document.write( "r =~ 0.05094222
\n" ); document.write( "=~ 5.09%
\n" ); document.write( "=============
\n" ); document.write( "No logs needed.\r
\n" ); document.write( "
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