document.write( "Question 962607: Solve the exponential equation algebraically. Approximate the result to three decimal places. (Enter your answers as a comma-separated list.)
\n" ); document.write( "4^(1 − x) = 315
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Algebra.Com's Answer #588161 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Solve the exponential equation algebraically. Approximate the result to three decimal places. (Enter your answers as a comma-separated list.)
\n" ); document.write( "4^(1 − x) = 315
\n" ); document.write( "use natural logs
\n" ); document.write( " $\"ln%284%5E%28%281-x%29%29%29+=+ln%28315%29\"$
\n" ); document.write( "the log equiv of exponents
\n" ); document.write( "(1-x)ln(4) = ln(315}
\n" ); document.write( "(1-x) = $\"ln%28315%29%2Fln%284%29\"$
\n" ); document.write( "use you calc
\n" ); document.write( "1 - x = 4.1496
\n" ); document.write( "-x = 4.1496 - 1
\n" ); document.write( "-x = 3.1496
\n" ); document.write( "mult both sides by -1
\n" ); document.write( "x = -3.1496
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this on your calc, enter: 4^(1-(-3.1496)) \n" ); document.write( "

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