document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=123050>Question 123050</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131250876/algebrahomeworkh>prentice hall mathematics algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Suppose you buy flour and cornmeal in bulk to make flour tortillas and corn tortillas.Flour costs $1.50/lb.Cornmeal costs $2.50/lb.You want to spend less than $9.50 on flour and cornmeal,and you need at least 4 lb altogether.<BR>\n" );
document.write( "a.Write a system of inequalities that describes this situation.<BR>\n" );
document.write( "b.Graph the system to show all possible solutions. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #90304 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=90304\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose you buy flour and cornmeal in bulk to make flour tortillas and corn tortillas.<BR>\n" );
document.write( "Flour costs $1.50/lb.Cornmeal costs $2.50/lb.<BR>\n" );
document.write( "You want to spend less than $9.50 on flour and cornmeal,and you need at least 4 lb altogether.<BR>\n" );
document.write( "--------------------------------------<BR>\n" );
document.write( "a.Write a system of inequalities that describes this situation.<BR>\n" );
document.write( "0<=f<=4<BR>\n" );
document.write( "0<=c<=0<BR>\n" );
document.write( "Quantity Inequality: f+c>=4<BR>\n" );
document.write( "Cost Inequality: 1.5f + 2.5c <9.5<BR>\n" );
document.write( "---------------------------\r<BR>\n" );
document.write( "\n" );
document.write( "b.Graph the system to show all possible solutions.<BR>\n" );
document.write( "Draw a vertical line at c=4<BR>\n" );
document.write( "Draw a horizontal line at f=4<BR>\n" );
document.write( "Graph f=4-c as a solid line.<BR>\n" );
document.write( "Shade the half-plane above it.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Graph f=(-2.5/1.5)c+(9.5/1.5) as a dashed line.<BR>\n" );
document.write( "Shade the half-plane below it.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "The intersection of the half-planes including the boundary f=4-c<BR>\n" );
document.write( "is the solution area.<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C4-x%2C%28-2.5%2F1.5%29x%2B%289.5%2F1.5%29%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C4-x%2C%28-2.5%2F1.5%29x%2B%289.5%2F1.5%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );