document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=125407>Question 125407</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321466071/algebrahomeworkh>college algebra third edition</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I have tried and tried to solve this and another problem.  I am in college and on the Dean's list but for some reason I cannot solve this problem, PLEASE HELP!!!!\r<BR>\n" );
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document.write( "Page 129<BR>\n" );
document.write( "#32<BR>\n" );
document.write( "Corral Design.  A rancher has 360 yd of fencing with which to enclose two adjacent rectangular corrals.  A river forms one side of the corrals (lengthwise).  Suppose the width of each corral is x yards.<BR>\n" );
document.write( "A. Express the total area of the two corrals as a function of x.  <BR>\n" );
document.write( "B. Find the domain of the function.\r<BR>\n" );
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document.write( "Please help ASAP. thank you so much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #91894 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=91894\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are 3 sections of fence perpendicular to the river, each of<BR>\n" );
document.write( "length <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Since the total amount of fencing is 360 yds, I have<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+x%2A%28360+-+3x%29 ALIGN=MIDDLE  ALT=\"A+=+x%2A%28360+-+3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the width and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=360+-+3x ALIGN=MIDDLE  ALT=\"360+-+3x\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the length of 2 coralls<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28x%29+=+-3x%5E2+%2B+360x ALIGN=MIDDLE  ALT=\"A%28x%29+=+-3x%5E2+%2B+360x\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer<BR>\n" );
document.write( "The domain is all values of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > that make <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%28x%29+%3E=+0 ALIGN=MIDDLE  ALT=\"A%28x%29+%3E=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3x%5E2+%2B+360x+%3E=+0 ALIGN=MIDDLE  ALT=\"-3x%5E2+%2B+360x+%3E=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2A%28-x+%2B+120%29+%3E=+0 ALIGN=MIDDLE  ALT=\"3x%2A%28-x+%2B+120%29+%3E=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The expression equals <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0 ALIGN=MIDDLE  ALT=\"0\"   DISABLED_style= \"max-width:90%; height:auto;\" > when either <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+0 ALIGN=MIDDLE  ALT=\"x+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "OR<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-x+%2B+120+=+0 ALIGN=MIDDLE  ALT=\"-x+%2B+120+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+120 ALIGN=MIDDLE  ALT=\"x+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "There are 2 factors on the left side. The product is >0 when<BR>\n" );
document.write( "either both are negative or both positive: (-)(-) or (+)(+)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%3C+0 ALIGN=MIDDLE  ALT=\"x+%3C+0\"   DISABLED_style= \"max-width:90%; height:auto;\" > AND <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%3E+120 ALIGN=MIDDLE  ALT=\"x+%3E+120\"   DISABLED_style= \"max-width:90%; height:auto;\" > (this is (-)(-))<BR>\n" );
document.write( "OR<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3E0 ALIGN=MIDDLE  ALT=\"x%3E0\"   DISABLED_style= \"max-width:90%; height:auto;\" > AND <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%3C+120 ALIGN=MIDDLE  ALT=\"x+%3C+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The first condition is impossible, since it requires <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > to be<BR>\n" );
document.write( "negative and positive at the same time, so the domain is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0+%3C=+x+%3C=+120 ALIGN=MIDDLE  ALT=\"0+%3C=+x+%3C=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" >  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );