document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=145264>Question 145264</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073268620/algebrahomeworkh>Elementary and Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The function S = 500 + 200X and D = 9500 - 100X express the supply S and the demand D, respectively, for a popular compact disc brand as a function of its price x (in dollars. \r<BR>\n" );
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document.write( "A) Graph the functions on the same coordinate system.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #105985 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=105985\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> he function S = 500 + 200X and D = 9500 - 100X express the supply S and the demand D, respectively, for a popular compact disc brand as a function of its price x (in dollars.<BR>\n" );
document.write( "A) Graph the functions on the same coordinate system.<BR>\n" );
document.write( "Plot both equations; you can use x=10, x=50; find y for each as follows:<BR>\n" );
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document.write( "y = 500+200x (Purple)<BR>\n" );
document.write( " x | y<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "10 | 2500<BR>\n" );
document.write( "50 | 10500<BR>\n" );
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document.write( "y = 9500-100x (Green)<BR>\n" );
document.write( " x | y<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "10 |8500<BR>\n" );
document.write( "50 |4500 <BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-20%2C+100%2C+-1000%2C+12000%2C+200x%2B500%2C+-100x%2B9500%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-20%2C+100%2C+-1000%2C+12000%2C+200x%2B500%2C+-100x%2B9500%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "you can see that D = S at x = 30, y = 6500 </SPAN>\n" );
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