document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1204409>Question 1204409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mountain is 11,986 feet above sea​ level, and a valley is 263 feet below sea level. What is the difference in elevation between the mountain and the​ valley? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #840631 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=840631\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "Draw a vertical number line. <BR>\n" );
document.write( "Mark point A at 11986<BR>\n" );
document.write( "Point B is at 0 to represent sea level.<BR>\n" );
document.write( "Point C is at -263<BR>\n" );
document.write( "Don't worry about the diagram being to scale. A rough quick sketch will suffice.\r<BR>\n" );
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document.write( "The distance from A to B is 11986 feet.<BR>\n" );
document.write( "The distance from B to C is 263 feet.\r<BR>\n" );
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document.write( "Add those values to get your final answer, which is the distance from A to C.\r<BR>\n" );
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document.write( "Why add when the textbook mentioned \"difference\"?<BR>\n" );
document.write( "This is because what we've effectively done is A - C = 11986 - (-263) = 11986 + 263<BR>\n" );
document.write( "The two negatives cancel out to form a positive.<BR>\n" );
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