document.write( "Question 430972: solve for x:
\n" ); document.write( "3^x =40 \n" ); document.write( "

Algebra.Com's Answer #299216 by nerdybill(7384) $\"\"$ $\"About$

You can put this solution on YOUR website!
3^x =40
\n" ); document.write( "take log base 3 of both sides:
\n" ); document.write( " $\"+x+=+log%283%2C40%29\"$
\n" ); document.write( "applying change of base:
\n" ); document.write( " $\"+x+=+log%2840%29%2Flog%283%29\"$
\n" ); document.write( " $\"+x+=+3.458+\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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