document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1116125>Question 1116125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Technological advances in farming made it possible to increase the crop of potatoes from 1 acre by 4 tons. As a result, from a field of 320 acres 640 tons of potatoes more were collected than before from a field of 400 acres. How many tons of potatoes were collected before the new methods and how many after the introduction of the new technology? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #730952 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=730952\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = tons of potatoes per acre collected<BR>\n" );
document.write( "before new methods<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+4+ ALIGN=MIDDLE  ALT=\"+x+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = tons of potatoes collected after<BR>\n" );
document.write( "the new technology<BR>\n" );
document.write( "------------------------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320%2A%28+x+%2B+4+%29+=+400x+%2B+640+ ALIGN=MIDDLE  ALT=\"+320%2A%28+x+%2B+4+%29+=+400x+%2B+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320x+%2B+1280+=+400x+%2B+640+ ALIGN=MIDDLE  ALT=\"+320x+%2B+1280+=+400x+%2B+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+80x+=+640+ ALIGN=MIDDLE  ALT=\"+80x+=+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+8+ ALIGN=MIDDLE  ALT=\"+x+=+8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+4+=+12+ ALIGN=MIDDLE  ALT=\"+x+%2B+4+=+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Before new methods:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320%2A8+=+2560+ ALIGN=MIDDLE  ALT=\"+320%2A8+=+2560+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2,560 tons were collected<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "After new methods:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320%2A12+=+3840+ ALIGN=MIDDLE  ALT=\"+320%2A12+=+3840+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "3,840 tons were collected<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+320%2A%28+x%2B4+%29+=+400x+%2B+640%0D%0A%7B%7B%7B+320x+%2B+1280+=+400x+%2B+640+ ALIGN=MIDDLE  ALT=\"+320%2A%28+x%2B4+%29+=+400x+%2B+640%0D%0A%7B%7B%7B+320x+%2B+1280+=+400x+%2B+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2560+%2B+1280+=+400%2A8+%2B+640+ ALIGN=MIDDLE  ALT=\"+2560+%2B+1280+=+400%2A8+%2B+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3840+=+3200+%2B+640+ ALIGN=MIDDLE  ALT=\"+3840+=+3200+%2B+640+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3840+=+3840+ ALIGN=MIDDLE  ALT=\"+3840+=+3840+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( "feel free to get a 2nd opinion<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );