document.write( "Question 368248: Hi! I need help to get the same answer as in the sheet.
\n" ); document.write( "http://www.vusd.org/webpages/rbrown/files/precalc%20review%203%20answers.pdf\r
\n" ); document.write( "\n" ); document.write( "My question is number 26.\r
\n" ); document.write( "\n" ); document.write( "Thank you!
\n" ); document.write( "

Algebra.Com's Answer #262408 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
The equation is \"P%28t%29+=+4.495%281.016%29%5Et\". We're given P(t) = 7, and have to solve for t.
\n" ); document.write( "\"7+=+4.495%281.016%29%5Et\",
\n" ); document.write( "\"ln%287%2F4.495%29+=+tln1.016\",
\n" ); document.write( "\"ln7+-+ln4.495+=+tln1.016\",
\n" ); document.write( "\"%28ln7+-+ln4.495%29%2Fln1.016+=+t\".
\n" ); document.write( "t = 27.9 years. Thus the population becomes 7 million at 1980 + 27.9 = 2007.9, which is still part of 2007 (around late October? haha)
\n" ); document.write( "
\n" );