document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=140587>Question 140587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm pretty sure this question would go under this category, I have no idea where to start.  Any help would be appreciated<BR>\n" );
document.write( "A company determines that the profit, P(x), earned on the sale of x items is given<BR>\n" );
document.write( "by the formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P%28x%29=+20x+-+x%5E2+ ALIGN=MIDDLE  ALT=\"+P%28x%29=+20x+-+x%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "a) Determine the number of items sold if the company loses $2,400.<BR>\n" );
document.write( "b) How many items must be sold for the maximum profit?<BR>\n" );
document.write( "c) What is the maximum profit?\r<BR>\n" );
document.write( "\n" );
document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #102366 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=102366\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(x)= 20x - x^2<BR>\n" );
document.write( "a)<BR>\n" );
document.write( "20x-x^2=-2400<BR>\n" );
document.write( "x^2-20x-2400=0<BR>\n" );
document.write( "(x-60)(x+40)=0<BR>\n" );
document.write( "x=60<BR>\n" );
document.write( ".<BR>\n" );
document.write( "b) As you can see by the graph below 10 items sold yield the maximum profit.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "c) 20*10-10^2=$100<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28500%2C500%2C-10%2C30%2C-125%2C125%2C20x-x%5E2%29 ALIGN=MIDDLE  ALT=\"graph%28500%2C500%2C-10%2C30%2C-125%2C125%2C20x-x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );