document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=161558>Question 161558</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073533490/algebrahomeworkh>ELEMENTARY AND INTERMEDIATE ALGEBRA</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The demand for tickets to a play can be modeled by the<BR>\n" );
document.write( "equation d = 1000-20p, where d is the number of tickets<BR>\n" );
document.write( "sold and p is the price per ticket in dollars.<BR>\n" );
document.write( "a) How many tickets will be sold at $10 per ticket?<BR>\n" );
document.write( "b) Find the intercepts and interpret them.<BR>\n" );
document.write( "c) Find and interpret the slope, including units. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119045 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=119045\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The demand for tickets to a play can be modeled by the<BR>\n" );
document.write( "equation d = 1000-20p, where d is the number of tickets<BR>\n" );
document.write( "sold and p is the price per ticket in dollars.<BR>\n" );
document.write( "a) How many tickets will be sold at $10 per ticket?<BR>\n" );
document.write( "b) Find the intercepts and interpret them.<BR>\n" );
document.write( "c) Find and interpret the slope, including units.<BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "a) d = 1000-20p<BR>\n" );
document.write( "d = 1000 - 20*10<BR>\n" );
document.write( "d = 800 tickets<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "b) To find the intercepts, set one variable to zero and solve for the other.<BR>\n" );
document.write( "Let d = the vertical axis and price the horizontal, tho this is arbitrary.<BR>\n" );
document.write( "d = 1000-20p<BR>\n" );
document.write( "At p = 0, d = 1000<BR>\n" );
document.write( "The d-intercept is (0,1000)   (p,d) is the order<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "d = 1000-20p<BR>\n" );
document.write( "at d = 0, p = 50<BR>\n" );
document.write( "The p-intercept is (50,0)<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "c) The slope is -20 tickets sold per dollar price.  That is, raising the price $1 causes 20 fewer tickets to be sold.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );