document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91171>Question 91171</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bookstore manager plans to spend $60.00 on pens at 30 cents each and pencils at 10 cents each. The equation 0.10x + 0.30y = 60 can be used to model this situation.<BR>\n" );
document.write( "a.) What do x and y represent?<BR>\n" );
document.write( "b.) Graph th equation.<BR>\n" );
document.write( "c.) Write the equation in slope-intercept form.<BR>\n" );
document.write( "d.) What is the slope of the line?<BR>\n" );
document.write( "e.) What does the slope tell you? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66177 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=66177\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bookstore manager plans to spend $60.00 on pens at 30 cents each and pencils at 10 cents each. The equation 0.10x + 0.30y = 60 can be used to model this situation.<BR>\n" );
document.write( "a.) What do x and y represent?<BR>\n" );
document.write( "x is the # of pencils; y is the number of pens<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "b.) Graph th equation.<BR>\n" );
document.write( "Solve for y, as follows:<BR>\n" );
document.write( "y = (-1/3)x + 200<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C625%2C-10%2C225%2C%28-1%2F3%29x%2B200%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C625%2C-10%2C225%2C%28-1%2F3%29x%2B200%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "c.) Write the equation in slope-intercept form.<BR>\n" );
document.write( "y=(-1/3)x+200<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "d.) What is the slope of the line?<BR>\n" );
document.write( "slope = -1/3<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "e.) What does the slope tell you?<BR>\n" );
document.write( "As the number of pens sold decreases 1 the number of percils sold increases<BR>\n" );
document.write( "by 3<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );