document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320142>Question 320142</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have tried this one several times and can not get the answer. The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car travelling 70 mph can stop in 270 ft, how many feet will it take the same car to stop when it is travelling 30 mph? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229376 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The stopping distance d of a car after the brakes are applied varies directly as <BR>\n" );
document.write( "the square of the speed r.<BR>\n" );
document.write( " If a car traveling 70 mph can stop in 270 ft, how many feet will it take the<BR>\n" );
document.write( " same car to stop when it is traveling 30 mph.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Use a ratio equation, find d for 30 mph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70%5E2%2F30%5E2 ALIGN=MIDDLE  ALT=\"70%5E2%2F30%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=270%2Fd ALIGN=MIDDLE  ALT=\"270%2Fd\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4900%2F900 ALIGN=MIDDLE  ALT=\"4900%2F900\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=270%2Fd ALIGN=MIDDLE  ALT=\"270%2Fd\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "4900d = 900 * 270<BR>\n" );
document.write( ":<BR>\n" );
document.write( "4900d = 243000<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=243000%2F4900 ALIGN=MIDDLE  ALT=\"243000%2F4900\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d = 49.6 ft, stopping distance at 30 mph<BR>\n" );
document.write( " </SPAN>\n" );
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