document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=197068>Question 197068</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780495553458/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A consumer electronics company sells 6.7 million MP3 players per month at a price of $100 apiece; when the price is lowered tp$80, the company sells 10.2 million players per month. How many MP3 players can the company expect to sell per month at a price of $75? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #147795 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=147795\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A consumer electronics company sells 6.7 million MP3 players per month at<BR>\n" );
document.write( " a price of $100 apiece; when the price is lowered tp$80, the company sells<BR>\n" );
document.write( " 10.2 million players per month. How many MP3 players can the company expect<BR>\n" );
document.write( " to sell per month at a price of $75?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Assign the values as follows<BR>\n" );
document.write( "x1 = 100; y1 = 6.7<BR>\n" );
document.write( "x2 = 80; y2 = 10.2<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Find the slope: m = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2810.2-6.7%29%2F%2880+-+100%29 ALIGN=MIDDLE  ALT=\"%2810.2-6.7%29%2F%2880+-+100%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3.5%2F%28-20%29 ALIGN=MIDDLE  ALT=\"3.5%2F%28-20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = -.175<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the equation using point/slope formula: y - y1 = m(x - x1)<BR>\n" );
document.write( "y - 6.7 = -.175(x - 100)<BR>\n" );
document.write( "y - 6.7 = -.175x + 17.5<BR>\n" );
document.write( "y = -.175x + 17.5 + 6.7<BR>\n" );
document.write( "y = -.175x + 24.2<BR>\n" );
document.write( ":<BR>\n" );
document.write( "How many MP3 players can the company expect to sell per month at a price of $75?<BR>\n" );
document.write( "y = -.175(75) + 24.2<BR>\n" );
document.write( "y = -13.125 + 24.2<BR>\n" );
document.write( "y = 11.075 million sold at $75 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );