document.write( "Question 116572: Suppose that the function P=12 +50 ln x represents the percentage of inbound e-mail in the US that is considered spam, where x is the number of years after 2001.\r
\n" ); document.write( "\n" ); document.write( "Use this model to approximate the year that the percent of spam will reach 90% provided that law enforcement regarding spammers does not change. \n" ); document.write( "

Algebra.Com's Answer #84745 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"P=12+%2B50+ln+x=90\"$
\n" ); document.write( " $\"50+ln+x=90-12\"$
\n" ); document.write( " $\"50+ln+x=78\"$
\n" ); document.write( " $\"ln+x=1.56\"$
\n" ); document.write( " $\"x=e%5E%281.56%29\"$
\n" ); document.write( " $\"x=4.76\"$
\n" ); document.write( "That's approximately 4 years 9 months
\n" ); document.write( "From 2001, the year would be 2005. \n" ); document.write( "

\n" );