document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1029934>Question 1029934</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The total amount spent by Americans on shoes and clothing from 2000 to 2009 can be modeled by<BR>\n" );
document.write( "            <BR>\n" );
document.write( "f(x)=49.79x2+71.73x+97.29\r<BR>\n" );
document.write( "\n" );
document.write( "where x=0 represents 2000 and f(x) is in billions of dollars. Based om this model, in what year did spending on shoes and clothing reach a maximum?\r<BR>\n" );
document.write( "\n" );
document.write( "The 49.79x2 is supposed to be x squared. <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 #644845 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=644845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> : The total amount spent by Americans on shoes and clothing from 2000 to 2009 can be modeled by\r<BR>\n" );
document.write( "\n" );
document.write( "f(x)= -49.79x2+71.73x+97.29 <BR>\n" );
document.write( "where x=0 represents year 2000 and f(x) is in billions of dollars. Based om this model, in what year did spending on shoes and clothing reach a maximum?<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Max occurs when x = -b/(2a) = -71.73/(2*-49.79)  is less than one.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "I think you did not post your problem correctly.<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "---------------  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );