document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1109525>Question 1109525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1990, the population of the Midwest was about 60 million. During the 1990s, the population of<BR>\n" );
document.write( "this area increased an average of about 0.4 million per year.<BR>\n" );
document.write( "The population of the West was about 53 million in 1990. The population of this area increased an<BR>\n" );
document.write( "average of about 1 million per year during the 1990s.<BR>\n" );
document.write( "Assume that the rate of growth of these areas remains the same. Find the equation of the system and estimate when the population of<BR>\n" );
document.write( "the West would be equal to the population of the Midwest.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #724515 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=724515\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are given a point and the slope<BR>\n" );
document.write( "for both MW and W populations<BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "For MW:<BR>\n" );
document.write( "( 0, 60 )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+.4+ ALIGN=MIDDLE  ALT=\"+m+=+.4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "For W:<BR>\n" );
document.write( "( 0, 53 )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+1+ ALIGN=MIDDLE  ALT=\"+m+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Time in yrs is plotted on the horizontal axis as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Population in millions is plotted on the vertical axis as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+ ALIGN=MIDDLE  ALT=\"+P+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The given points are vertical axis intercepts.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "For MW:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+.4t+%2B+b+ ALIGN=MIDDLE  ALT=\"+P+=+.4t+%2B+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+60+=+.4%2A0+%2B+b+ ALIGN=MIDDLE  ALT=\"+60+=+.4%2A0+%2B+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+60+ ALIGN=MIDDLE  ALT=\"+b+=+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+.4t+%2B+60+ ALIGN=MIDDLE  ALT=\"+P+=+.4t+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For W:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+1%2At+%2B+b+ ALIGN=MIDDLE  ALT=\"+P+=+1%2At+%2B+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+53+=+1%2A0+%2B+b+ ALIGN=MIDDLE  ALT=\"+53+=+1%2A0+%2B+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+53+ ALIGN=MIDDLE  ALT=\"+b+=+53+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+t+%2B+53+ ALIGN=MIDDLE  ALT=\"+P+=+t+%2B+53+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Set the populations, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+ ALIGN=MIDDLE  ALT=\"+P+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "equal to eachother<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.4t+%2B+60+=+t+%2B+53+ ALIGN=MIDDLE  ALT=\"+.4t+%2B+60+=+t+%2B+53+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6t+=+7+ ALIGN=MIDDLE  ALT=\"+.6t+=+7+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+11.667+ ALIGN=MIDDLE  ALT=\"+t+=+11.667+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "The populations will be the same in <BR>\n" );
document.write( "1990 + 11.667 yrs = 2001 and 8 months<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+.4%2A11.667+%2B+60+ ALIGN=MIDDLE  ALT=\"+P+=+.4%2A11.667+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+64.667+ ALIGN=MIDDLE  ALT=\"+P+=+64.667+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+11.667+%2B+53+ ALIGN=MIDDLE  ALT=\"+P+=+11.667+%2B+53+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+64.667+ ALIGN=MIDDLE  ALT=\"+P+=+64.667+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );