document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=172531>Question 172531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I would appreciate any help on the below question. I came up with P = -x + 62. I am not sure if this is correct or if it should be P = -x + 104.\r<BR>\n" );
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document.write( "1.	In this problem, we will analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open market. Often, the demand equation is found empirically (through experiment, or market research). \r<BR>\n" );
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document.write( "a.	Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. (Hint: Write an equation using two points in the form (x,p)). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #127403 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=127403\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p+=+-x+%2B+62 ALIGN=MIDDLE  ALT=\"p+=+-x+%2B+62\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p+=+mx+%2B+b ALIGN=MIDDLE  ALT=\"p+=+mx+%2B+b\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20+=+42m+%2B+b ALIGN=MIDDLE  ALT=\"20+=+42m+%2B+b\"   DISABLED_style= \"max-width:90%; height:auto;\" > and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10+=+52m+%2B+b ALIGN=MIDDLE  ALT=\"10+=+52m+%2B+b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "subtract (2) from (1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10+=+-10m ALIGN=MIDDLE  ALT=\"10+=+-10m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+-1 ALIGN=MIDDLE  ALT=\"m+=+-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Put this back into (1) or (2)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20+=+-42+%2B+b ALIGN=MIDDLE  ALT=\"20+=+-42+%2B+b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+62 ALIGN=MIDDLE  ALT=\"b+=+62\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The equation is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p+=+-x+%2B+62 ALIGN=MIDDLE  ALT=\"p+=+-x+%2B+62\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This predicts that they can't sell any tiles if the<BR>\n" );
document.write( "price is $62 and they will sell 62 tiles if they<BR>\n" );
document.write( "give them away. In reality, they would sell their<BR>\n" );
document.write( "entire stock then, so this isn't real-world </SPAN>\n" );
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