document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43985>Question 43985</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A weight of 80 pounds stretches a spring 4.5 inches.  How far (to the nearest 0.01 inch) will a weight of 125 pounds stretch the spring? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28900 by </B><A HREF=/tutors/aboutme.mpl?userid=adamchapman><B>adamchapman(301)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=adamchapman><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=28900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation governing the extension of a spring is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F=kx ALIGN=MIDDLE  ALT=\"F=kx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where k is the stiffness (force per unit length) and F is the force applied. x is the extension of the spring.<BR>\n" );
document.write( "A weight of 80 pounds stretches a spring 4.5 inches. So rearranging the equation given, <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=F%2Fx ALIGN=MIDDLE  ALT=\"k=F%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=%2880%2F4.5%29pounds+per+inch ALIGN=MIDDLE  ALT=\"k=%2880%2F4.5%29pounds+per+inch\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now when 125 pounds are applied:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=125=%2880%2F4.5%29x ALIGN=MIDDLE  ALT=\"125=%2880%2F4.5%29x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Rearranging:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28125%2A4.5%29%2F80 ALIGN=MIDDLE  ALT=\"x=%28125%2A4.5%29%2F80\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "the solution is x=7.03 inches (to the nearest 0.01 inch)\r<BR>\n" );
document.write( "\n" );
document.write( "I hope this helps.\r<BR>\n" );
document.write( "\n" );
document.write( "P.S. I am trying to start my own mathematics homework help website.  I would be extremely grateful if you would send me your feedback on my help to adam.chapman@student.manchester.ac.uk.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );