document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=122754>Question 122754</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve.\r<BR>\n" );
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document.write( "The demand equation for a certain type of printer is given by d = -200p + 35,000. The supply equation is predicted to be s = -p squared + 400p - 20,000. Find the equilibrium price. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #90114 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=90114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The demand equation for a certain type of printer is given by d = -200p + 35,000. The supply equation is predicted to be s = -p squared + 400p - 20,000. Find the equilibrium price.<BR>\n" );
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document.write( "Equilibrium occurs when demand = supply<BR>\n" );
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document.write( "-p^2+400p-20,000 = -200p+35000<BR>\n" );
document.write( "p^2-600p+55000 = 0<BR>\n" );
document.write( "p=[600 +- sqrt(600^2-4*55000)]/2<BR>\n" );
document.write( "p=[600 +- sqrt(140000)]/2<BR>\n" );
document.write( "p = $112.92 or p=$487.08<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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