document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=146674>Question 146674</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello,<BR>\n" );
document.write( "I am enrolled in a pre-algebra course online (so hard). Each week, we have to pick a \"homework\" problem from an approved list out of the current chapter in which we are working in.  I have attempted to solve mine but I got stuck halfway through. I will type the problem just as it is stated in the textbook.<BR>\n" );
document.write( "Demand equation.  Helen's Health Foods usually sells 400 cans of ProPac Muscle Punch per week when the price is $5 per can.  After experimenting with prices for some time, Helen has determined that the weekly demand can be found using the equation <BR>\n" );
document.write( "d=600-40p,<BR>\n" );
document.write( "where d is the numbe of cans and p is the price per can.<BR>\n" );
document.write( "a) Will Helen sell more or less cans if she raises her price from $5?<BR>\n" );
document.write( "b) What happens to her sales every time she raises her price by $1?<BR>\n" );
document.write( "c)Graph the equation<BR>\n" );
document.write( "d) What is the maximum price that she can charge and still sell at least one can?\r<BR>\n" );
document.write( "\n" );
document.write( "I used the formula:<BR>\n" );
document.write( "d=600-40 * 5 = 2800<BR>\n" );
document.write( "d=600-40 * 6 = 3360\r<BR>\n" );
document.write( "\n" );
document.write( "and so on, I don't know if this is right because if you increase the price, the demand increases, but wouldn't it be the other way around?<BR>\n" );
document.write( "Thanks so much for your help :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107097 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=107097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It is the other way around.<BR>\n" );
document.write( "It's 600 - (40*5) = 400, and<BR>\n" );
document.write( "600 - (40*6) = 360.<BR>\n" );
document.write( "Multiply first, then subtract<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "a) She'll sell fewer cans if the price goes up.<BR>\n" );
document.write( "b) For each $1 increase, she'll sell 40 fewer cans.<BR>\n" );
document.write( "c) Don't know how to do that here.<BR>\n" );
document.write( "d) 600 - (40*Max) = 1<BR>\n" );
document.write( "40*Max = 599<BR>\n" );
document.write( "Max = 599/40 = $15 (to the nearest dollar), or $14.975. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );