document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838593>Question 838593</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A newspaper earns a profit of $20 per year for 3000 subscribers.  They project that the profit will increase by .01 for each additional subscriber...how many subscribers are needed to bring the total profits to $138125..... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505176 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=505176\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we want the equation of a line with slope = 0.01 through (3000,20)<BR>\n" );
document.write( "using y = mx + b as a template,<BR>\n" );
document.write( "20 = (0.01)(3000) + b<BR>\n" );
document.write( "20 = 30 + b<BR>\n" );
document.write( "add -30 to each side<BR>\n" );
document.write( "-10 = b<BR>\n" );
document.write( "So our equation is y = (0.01)x -10<BR>\n" );
document.write( "The number of subscribers x for $138125 is<BR>\n" );
document.write( "138125 = (0.01)x -10<BR>\n" );
document.write( "add 10 to each side<BR>\n" );
document.write( "138115 = 0.01x<BR>\n" );
document.write( "multiply each side by 100<BR>\n" );
document.write( "13811500 = x<BR>\n" );
document.write( "So we need 138,811,500 subscribers<BR>\n" );
document.write( "Checking our equation for 3000 subscribers,<BR>\n" );
document.write( "y = 0.01(3000) - 10<BR>\n" );
document.write( "y = 30 - 10<BR>\n" );
document.write( "y = 20 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );