document.write( "Question 608919: The consumption of electricity has increased at a continuous rate of 6% per year. If it continued to increase at this rate, find the number of years before exactly twice as much electricity would be needed. \n" ); document.write( "

Algebra.Com's Answer #383484 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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The consumption of electricity has increased at a continuous rate of 6% per year.
\n" ); document.write( " If it continued to increase at this rate, find the number of years before exactly twice as much electricity would be needed.
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\n" ); document.write( "Let t = no. of yrs for the price to double
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\n" ); document.write( "1*(1+.06)^t = 2
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\n" ); document.write( "Use nat logs to solve this:
\n" ); document.write( "t*ln(1.06) = ln(2)
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\n" ); document.write( "t = $\"ln%282%29%2Fln%281.06%29\"$ ; use a calc
\n" ); document.write( "t = 11.89 yrs
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