document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=128716>Question 128716</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780618775248/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I think I'm missing an integral piece... can you give me a hand?\r<BR>\n" );
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document.write( "Using the formula: A=P(1+r)^2\r<BR>\n" );
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document.write( "In order for $1000.00 to increase to $1440.00 in 2 years, what is the interest rate?\r<BR>\n" );
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document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #94163 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=94163\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The formula for compound interest is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+P%281%2Bi%29%5En ALIGN=MIDDLE  ALT=\"A+=+P%281%2Bi%29%5En\"   DISABLED_style= \"max-width:90%; height:auto;\" > where A = present amount, P = the principal invested, i = the interest rate (expressed as a decimal), and n = the number of years.<BR>\n" );
document.write( "You may also see this written:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+P%281%2Br%29%5Et ALIGN=MIDDLE  ALT=\"A+=+P%281%2Br%29%5Et\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In your problem, you will substitute A = $1,440.00, P = $1,000.00, and n = 2 years.  So make the appropriate substitiutions and solve  for r.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1440+=+1000%281%2Br%29%5E2 ALIGN=MIDDLE  ALT=\"1440+=+1000%281%2Br%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 1000<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.44+=+%281%2Br%29%5E2 ALIGN=MIDDLE  ALT=\"1.44+=+%281%2Br%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the square root of both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.2+=+1%2Br ALIGN=MIDDLE  ALT=\"1.2+=+1%2Br\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 1 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.2+=+r ALIGN=MIDDLE  ALT=\"0.2+=+r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply by 100 to convert to percent.<BR>\n" );
document.write( "r = 20% </SPAN>\n" );
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