document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1129563>Question 1129563</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Santos invests $7700 in two different accounts. The first account paid 11 %, the second account paid 2 % in interest. At the end of the first year he had earned $424 in interest. How much was in each account?\r<BR>\n" );
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document.write( "At 11%-<BR>\n" );
document.write( "At 2%- </SPAN>\n" );
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document.write( "Santos invests $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7700 ALIGN=MIDDLE  ALT=\"7700\"   DISABLED_style= \"max-width:90%; height:auto;\" > in two different accounts. \r<BR>\n" );
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document.write( "let's say <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 one account and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > is other account\r<BR>\n" );
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document.write( "The first account paid <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11 ALIGN=MIDDLE  ALT=\"11\"   DISABLED_style= \"max-width:90%; height:auto;\" > %, =<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.11 ALIGN=MIDDLE  ALT=\"0.11\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "the second account paid <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" > % in interest=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.02 ALIGN=MIDDLE  ALT=\"0.02\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "At the end of the first year he had earned $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=424 ALIGN=MIDDLE  ALT=\"424\"   DISABLED_style= \"max-width:90%; height:auto;\" > in interest.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=7700 ALIGN=MIDDLE  ALT=\"x%2By=7700\"   DISABLED_style= \"max-width:90%; height:auto;\" >........eq.1->both sides multiply  by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11 ALIGN=MIDDLE  ALT=\"11\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.11x%2B0.02y=424 ALIGN=MIDDLE  ALT=\"0.11x%2B0.02y=424\"   DISABLED_style= \"max-width:90%; height:auto;\" >......eq.2->both sides multiply  by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100 ALIGN=MIDDLE  ALT=\"100\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B11y=84700 ALIGN=MIDDLE  ALT=\"11x%2B11y=84700\"   DISABLED_style= \"max-width:90%; height:auto;\" >........eq.1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B2y=42400 ALIGN=MIDDLE  ALT=\"11x%2B2y=42400\"   DISABLED_style= \"max-width:90%; height:auto;\" >......eq.2<BR>\n" );
document.write( "----------------------------------------------------subtract<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11x%2B11y-11x-2y=84700-42400 ALIGN=MIDDLE  ALT=\"11x%2B11y-11x-2y=84700-42400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%2811x%29%2B11y-cross%2811x%29-2y=42300 ALIGN=MIDDLE  ALT=\"cross%2811x%29%2B11y-cross%2811x%29-2y=42300\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9y=42300 ALIGN=MIDDLE  ALT=\"9y=42300\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=42300%2F9 ALIGN=MIDDLE  ALT=\"y=42300%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=4700 ALIGN=MIDDLE  ALT=\"y=4700\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "then,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=7700 ALIGN=MIDDLE  ALT=\"x%2By=7700\"   DISABLED_style= \"max-width:90%; height:auto;\" >...plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B4700=7700 ALIGN=MIDDLE  ALT=\"x%2B4700=7700\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=7700-4700 ALIGN=MIDDLE  ALT=\"x=7700-4700\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=3000 ALIGN=MIDDLE  ALT=\"x=3000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " How much was in each account? <BR>\n" );
document.write( "At <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=11 ALIGN=MIDDLE  ALT=\"11\"   DISABLED_style= \"max-width:90%; height:auto;\" >%- was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3000 ALIGN=MIDDLE  ALT=\"3000\"   DISABLED_style= \"max-width:90%; height:auto;\" >-> got <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=330 ALIGN=MIDDLE  ALT=\"330\"   DISABLED_style= \"max-width:90%; height:auto;\" > in interest<BR>\n" );
document.write( "At <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" >%-  was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4700 ALIGN=MIDDLE  ALT=\"4700\"   DISABLED_style= \"max-width:90%; height:auto;\" > -> got <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=94 ALIGN=MIDDLE  ALT=\"94\"   DISABLED_style= \"max-width:90%; height:auto;\" > in interest\r<BR>\n" );
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document.write( " </SPAN>\n" );
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