document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1016709>Question 1016709</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A manufacturer of graphing calculators has determined that 10,000 calculators per week will be sold at a price of $95 per calculator.  At a price of $90, it is estimated that 12,000 calculators will be sold.  <BR>\n" );
document.write( "(I)	Algebraically determine the linear function that predicts the number of calculators that will be sold per week at a price of x dollars.		 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #633107 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=633107\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plot price, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+ ALIGN=MIDDLE  ALT=\"+P+\"   DISABLED_style= \"max-width:90%; height:auto;\" > on the vertical axis<BR>\n" );
document.write( "Plot number of calculators/wk sold, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is in thousands<BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "You are given the points:<BR>\n" );
document.write( "( 10, 95 )<BR>\n" );
document.write( "( 12, 90 )<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Use the general point-slope formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+P+-+90+%29+%2F+%28+n+-+12+%29+=+%28+95+-+90+%29+%2F+%28+10+-+12+%29+ ALIGN=MIDDLE  ALT=\"+%28+P+-+90+%29+%2F+%28+n+-+12+%29+=+%28+95+-+90+%29+%2F+%28+10+-+12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+P+-+90+%29+%2F+%28+n+-+12+%29+=+5+%2F+%28-2%29+ ALIGN=MIDDLE  ALT=\"+%28+P+-+90+%29+%2F+%28+n+-+12+%29+=+5+%2F+%28-2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-2%2A%28+n+-+12+%29+ ALIGN=MIDDLE  ALT=\"+-2%2A%28+n+-+12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-2P+%2B+180+=+5n+-+60+ ALIGN=MIDDLE  ALT=\"+-2P+%2B+180+=+5n+-+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2P+=+-5n+%2B+240+ ALIGN=MIDDLE  ALT=\"+2P+=+-5n+%2B+240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+-%285%2F2%29%2An+%2B+120+ ALIGN=MIDDLE  ALT=\"+P+=+-%285%2F2%29%2An+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer <BR>\n" );
document.write( "( change <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+ ALIGN=MIDDLE  ALT=\"+P+\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > if you like )<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "( 10,95 )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P+=+-%285%2F2%29%2An+%2B+120+ ALIGN=MIDDLE  ALT=\"+P+=+-%285%2F2%29%2An+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+95+=+-%285%2F2%29%2A10+%2B+120+ ALIGN=MIDDLE  ALT=\"+95+=+-%285%2F2%29%2A10+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+95+=+-25+%2B+120+ ALIGN=MIDDLE  ALT=\"+95+=+-25+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+95+=+95+ ALIGN=MIDDLE  ALT=\"+95+=+95+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "( 12,90 )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+90+=+-%285%2F2%29%2A12+%2B+120+ ALIGN=MIDDLE  ALT=\"+90+=+-%285%2F2%29%2A12+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+90+=+-30+%2B+120+ ALIGN=MIDDLE  ALT=\"+90+=+-30+%2B+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+90+=+90+ ALIGN=MIDDLE  ALT=\"+90+=+90+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );