document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=306258>Question 306258</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The equations S = 5000 + 200x and<BR>\n" );
document.write( "D = 9500 - 100x express the supply S and the<BR>\n" );
document.write( "demand D, respectively, for a popular compact disc brand<BR>\n" );
document.write( "in terms of its price x (in dollars).\r<BR>\n" );
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document.write( "a) Graph the equations on the same coordinate system.<BR>\n" );
document.write( "b) What happens to the supply as the price increases?<BR>\n" );
document.write( "c) What happens to the demand as the price increases?<BR>\n" );
document.write( "d) The price at which supply and demand are equal is<BR>\n" );
document.write( "called the equilibrium price.What is the equilibrium<BR>\n" );
document.write( "price? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #219220 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=219220\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S = 5000 + 200x <BR>\n" );
document.write( "Y=200X+5,000 (RED LINE)<BR>\n" );
document.write( "D = 9500 - 100x <BR>\n" );
document.write( "Y=-100X+9,500 (GREEN LINE)<BR>\n" );
document.write( "A) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-60%2C+50%2C+-500%2C+10000%2C+200x+%2B5000%2C+-100x+%2B9500%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+300%2C+-60%2C+50%2C+-500%2C+10000%2C+200x+%2B5000%2C+-100x+%2B9500%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x300 pixels, x from -60 to 50, y from -500 to 10000, of TWO functions 200x +5000and -100x +9500). \r<BR>\n" );
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document.write( "B) What happens to the supply as the price increases?<BR>\n" );
document.write( "The supply increases.<BR>\n" );
document.write( "C) What happens to the demand as the price increases?<BR>\n" );
document.write( "The demand decreases.<BR>\n" );
document.write( "D) The price at which supply and demand are equal is<BR>\n" );
document.write( "called the equilibrium price.What is the equilibrium<BR>\n" );
document.write( "price? 7,900=200X+5,000<BR>\n" );
document.write( "7,900=200X+5,000<BR>\n" );
document.write( "200X=7,900-5,000<BR>\n" );
document.write( "200X=2,900<BR>\n" );
document.write( "X=2,900/200<BR>\n" );
document.write( "x=$14.5 ans. </SPAN>\n" );
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