document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=381577>Question 381577</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This word problem is giving me fits!  Can you please help??\r<BR>\n" );
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document.write( "\"The percent increase for in-state tuition in Iowa public universities can be modeled by f(x)=0.156xsquared-2.05x+10.2, where x is the number of years after 1990.<BR>\n" );
document.write( "a)  Based on this model, by what percent did the tuition increase in 2001?  my answer for this was 6.5%\r<BR>\n" );
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document.write( "but I can't get part b.\r<BR>\n" );
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document.write( "b)  In what year was the minimum tuition increase?  To the nearest tenth, what percent did tuition increase that year?\r<BR>\n" );
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document.write( "Please help me solve...Thank you!  :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #270674 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=270674\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"The percent increase for in-state tuition in Iowa public universities can be modeled by f(x)=0.156xsquared-2.05x+10.2, where x is the number of years after 1990.<BR>\n" );
document.write( "a) Based on this model, by what percent did the tuition increase in 2001? my answer for this was 6.526%<BR>\n" );
document.write( "f(x)=0.156xsquared-2.05x+10.2<BR>\n" );
document.write( "f(11) =8.526  <BR>\n" );
document.write( "but I can't get part b.<BR>\n" );
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document.write( "b) In what year was the minimum tuition increase? To the nearest tenth, <BR>\n" );
document.write( "You have a quadratic equation.<BR>\n" );
document.write( "The minimum occurs when x = -b/2a = 2.05/(2(0.156)) = 6.5705..<BR>\n" );
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document.write( "That would be in during the 7th year after 2001.<BR>\n" );
document.write( "That would be in 2008<BR>\n" );
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document.write( "what percent did tuition increase that year? <BR>\n" );
document.write( "f(7) = 3.494%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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