document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1067717>Question 1067717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mother wants to invest $9,000.00 for her son's future education. She invests a portion of the money in a bank certificate of deposit (CD account) which earns 4% and the remainder ina. Savings bond that earns 7%. If the total interest earned after one year is $540.00 , how much money was invested in the CD account ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #682827 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=682827\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formula <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I+=+P%2Ar%2At+ ALIGN=MIDDLE  ALT=\"+I+=+P%2Ar%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1+ ALIGN=MIDDLE  ALT=\"+t+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" > yr<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "For interest on the CD:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+P%5B1%5D%2Ar%5B1%5D%2At+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+P%5B1%5D%2Ar%5B1%5D%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+P%5B1%5D%2A.04%2A1+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+P%5B1%5D%2A.04%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+.04P%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+.04P%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "For interest on the savings bond:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+P%5B2%5D%2Ar%5B2%5D%2At+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+P%5B2%5D%2Ar%5B2%5D%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+%28+9000+-+P%5B1%5D+%29%2A.07%2A1+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+%28+9000+-+P%5B1%5D+%29%2A.07%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+.07%2A9000+-+.07%2AP%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+.07%2A9000+-+.07%2AP%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+630+-+.07P%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+630+-+.07P%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+%2B+I%5B2%5D+=+540+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+%2B+I%5B2%5D+=+540+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+540+-+I%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+540+-+I%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "Plug (1) into (3)<BR>\n" );
document.write( "(3) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+540+-+.04P%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+540+-+.04P%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Plug (3) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+540+-+.04P%5B1%5D+=+630+-+.07P%5B1%5D+ ALIGN=MIDDLE  ALT=\"+540+-+.04P%5B1%5D+=+630+-+.07P%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.03P%5B1%5D+=+90+ ALIGN=MIDDLE  ALT=\"+.03P%5B1%5D+=+90+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P%5B1%5D+=+3000+ ALIGN=MIDDLE  ALT=\"+P%5B1%5D+=+3000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+.04P%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+.04P%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+.04%2A3000+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+.04%2A3000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B1%5D+=+120+ ALIGN=MIDDLE  ALT=\"+I%5B1%5D+=+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "$3,000 was invested in the CD account<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=+P%5B1%5D+%2B+P%5B2%5D+=+9000+ ALIGN=MIDDLE  ALT=\"+P%5B1%5D+%2B+P%5B2%5D+=+9000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P%5B2%5D+=+9000+-+3000+ ALIGN=MIDDLE  ALT=\"+P%5B2%5D+=+9000+-+3000+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+P%5B2%5D+=+6000+ ALIGN=MIDDLE  ALT=\"+P%5B2%5D+=+6000+\"   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=+I%5B2%5D+=+540+-+I%5B1%5D+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+540+-+I%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+540+-+120+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+540+-+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+I%5B2%5D+=+420+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+420+\"   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=+I%5B2%5D+=+P%5B2%5D%2Ar%5B2%5D%2At+ ALIGN=MIDDLE  ALT=\"+I%5B2%5D+=+P%5B2%5D%2Ar%5B2%5D%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+420+=+6000%2A.07+ ALIGN=MIDDLE  ALT=\"+420+=+6000%2A.07+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+420+=+420+ ALIGN=MIDDLE  ALT=\"+420+=+420+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );