document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1032909>Question 1032909</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The population of a village can be modelled by the function<BR>\n" );
document.write( "P(x)=-22.5x^2+428x+1100, where x is the number of years since 1990. According to the model, when will the population be the highest?\r<BR>\n" );
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document.write( "Thank you very much </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #647906 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=647906\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The highest point for P(x) is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28-b%2F2a%29 ALIGN=MIDDLE  ALT=\"P%28-b%2F2a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The year with the highest population will be 1990 + -b/2a<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-b%2F2a ALIGN=MIDDLE  ALT=\"-b%2F2a\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-428%2F%282%2A-22.5%29 ALIGN=MIDDLE  ALT=\"-428%2F%282%2A-22.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=428%2F45 ALIGN=MIDDLE  ALT=\"428%2F45\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1990 + 428/45 = 1999 23/45<BR>\n" );
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