document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1124228>Question 1124228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two boats leave the dock at the same time and travel in opposite directions. One travels 9 mph faster than the other. After 2 hours the boats are 170 miles apart. How fast is each boat traveling?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #740572 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=740572\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
document.write( "\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > be the rate (the speed) of the slower motorboat, in miles-per-hour.\r<BR>\n" );
document.write( "\n" );
document.write( "Then the rate of the faster motorboat is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B9%29mph ALIGN=MIDDLE  ALT=\"%28x%2B9%29mph\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
document.write( "\n" );
document.write( "the distance <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=r%2At ALIGN=MIDDLE  ALT=\"d=r%2At\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "after <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2h ALIGN=MIDDLE  ALT=\"2h\"   DISABLED_style= \"max-width:90%; height:auto;\" >:\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=2x ALIGN=MIDDLE  ALT=\"d=2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >->the slower motorboat<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=2%28x%2B9%29 ALIGN=MIDDLE  ALT=\"d=2%28x%2B9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >->the faster motorboat \r<BR>\n" );
document.write( "\n" );
document.write( "since they travel in opposite directions, you need to add <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2B2%28x%2B9%29 ALIGN=MIDDLE  ALT=\"2x%2B2%28x%2B9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get how par the boats are apart\r<BR>\n" );
document.write( "\n" );
document.write( "since given that the boats are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=170 ALIGN=MIDDLE  ALT=\"170\"   DISABLED_style= \"max-width:90%; height:auto;\" > miles apart, your equation is\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+2%28x%2B9%29+=+170 ALIGN=MIDDLE  ALT=\"2x+%2B+2%28x%2B9%29+=+170\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Simplify and solve the equation for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >:\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x+%2B+18+=+170 ALIGN=MIDDLE  ALT=\"4x+%2B+18+=+170\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x+=+170+-+18 ALIGN=MIDDLE  ALT=\"4x+=+170+-+18\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x+=+152 ALIGN=MIDDLE  ALT=\"4x+=+152\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+152%2F4+=+38 ALIGN=MIDDLE  ALT=\"x+=+152%2F4+=+38\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( " The speed of the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=slower ALIGN=MIDDLE  ALT=\"slower\"   DISABLED_style= \"max-width:90%; height:auto;\" > motorboat is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=38mph ALIGN=MIDDLE  ALT=\"38mph\"   DISABLED_style= \"max-width:90%; height:auto;\" >. <BR>\n" );
document.write( "The speed of the faster motorboat is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=38%2B9+=+47mph ALIGN=MIDDLE  ALT=\"38%2B9+=+47mph\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );