document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=984192>Question 984192</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the braking distance D in feet to stop a car traveling x miles per hour on dry, level pavement can be approximated by D=1/9x^2.<BR>\n" );
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document.write( "(a)calculate the braking for 20 miles per hour and 70 miles per hour, how do your answers compare? <BR>\n" );
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document.write( "(b) if the braking distance is 25 feet, estimate the speed of the car. <BR>\n" );
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document.write( "(c) use the calculator to solve part (b) numerically. Do your answers agree? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #604966 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=604966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "(a)Calculate the braking for 20 miles per hour and 70 miles per hour, how do your answers compare?<BR>\n" );
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document.write( "For 20 mph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29x%5E2 ALIGN=MIDDLE  ALT=\"D=%281%2F9%29x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29%2820mph%5E2%29 ALIGN=MIDDLE  ALT=\"D=%281%2F9%29%2820mph%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29%28400%29=44.44ft ALIGN=MIDDLE  ALT=\"D=%281%2F9%29%28400%29=44.44ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "For 70 mph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29%2870mph%29%5E2 ALIGN=MIDDLE  ALT=\"D=%281%2F9%29%2870mph%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29%284900%29=544.44ft ALIGN=MIDDLE  ALT=\"D=%281%2F9%29%284900%29=544.44ft\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "(c) Use the calculator to solve part (b) numerically. Do your answers agree?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=%281%2F9%29%28x%5E2%29 ALIGN=MIDDLE  ALT=\"D=%281%2F9%29%28x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9D=x%5E2 ALIGN=MIDDLE  ALT=\"9D=x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3sqrt%28D%29=x ALIGN=MIDDLE  ALT=\"3sqrt%28D%29=x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3sqrt%2825ft%29=x ALIGN=MIDDLE  ALT=\"3sqrt%2825ft%29=x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15mph=x ALIGN=MIDDLE  ALT=\"15mph=x\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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