document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150958>Question 150958</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0495389730/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> My problem is the polynomial function f(x)=0.004x^3-0.15x^2+4.9x + 7. Find the height of the track for x = 30 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #110895 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=110895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=0.004x%5E3-0.15x%5E2%2B4.9x+%2B+7 ALIGN=MIDDLE  ALT=\"f%28x%29=0.004x%5E3-0.15x%5E2%2B4.9x+%2B+7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=0.004%2830%29%5E3-0.15%2830%29%5E2%2B4.9%2830%29+%2B+7 ALIGN=MIDDLE  ALT=\"f%2830%29=0.004%2830%29%5E3-0.15%2830%29%5E2%2B4.9%2830%29+%2B+7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=30 ALIGN=MIDDLE  ALT=\"x=30\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=0.004%2827000%29-0.15%2830%29%5E2%2B4.9%2830%29%2B7 ALIGN=MIDDLE  ALT=\"f%2830%29=0.004%2827000%29-0.15%2830%29%5E2%2B4.9%2830%29%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Cube <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30 ALIGN=MIDDLE  ALT=\"30\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=27000 ALIGN=MIDDLE  ALT=\"27000\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=0.004%2827000%29-0.15%28900%29%2B4.9%2830%29%2B7 ALIGN=MIDDLE  ALT=\"f%2830%29=0.004%2827000%29-0.15%28900%29%2B4.9%2830%29%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Square <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30 ALIGN=MIDDLE  ALT=\"30\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=900 ALIGN=MIDDLE  ALT=\"900\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=108-0.15%28900%29%2B4.9%2830%29%2B7 ALIGN=MIDDLE  ALT=\"f%2830%29=108-0.15%28900%29%2B4.9%2830%29%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply 0.004 and 27,000 to get 108\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=108-135%2B4.9%2830%29%2B7 ALIGN=MIDDLE  ALT=\"f%2830%29=108-135%2B4.9%2830%29%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply -0.15 and 900 to get -135\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=108-135%2B147%2B7 ALIGN=MIDDLE  ALT=\"f%2830%29=108-135%2B147%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply 4.9 and 30 to get 147\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2830%29=127 ALIGN=MIDDLE  ALT=\"f%2830%29=127\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms\r<BR>\n" );
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document.write( "So the height is 127 units (you forgot to include the units in the problem) when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=30 ALIGN=MIDDLE  ALT=\"x=30\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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