document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131149>Question 131149</A>: <I><SPAN STYLE=\"word-break: break-all;\"> compound interest<BR>\n" );
document.write( "$500.  5% 10yrs compound quarterly. I know the answer is 821.81 but how. and I know the forumla ia a=p(1+ r/n)^nt help please thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #95762 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=95762\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=p%281%2Br%2Fn%29%5E%28n%2At%29 ALIGN=MIDDLE  ALT=\"A=p%281%2Br%2Fn%29%5E%28n%2At%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  Start with the compound interest formula\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=500%281%2B0.05%2F4%29%5E%284%2A10%29 ALIGN=MIDDLE  ALT=\"A=500%281%2B0.05%2F4%29%5E%284%2A10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  Plug in p=500, r=0.05 (this is the decimal form of 5% interest), n=4, and t=10\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=500%281%2B0.0125%29%5E%284%2A10%29 ALIGN=MIDDLE  ALT=\"A=500%281%2B0.0125%29%5E%284%2A10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >     Divide 0.05 by 4 to get 0.0125\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=500%281%2B0.0125%29%5E%2840%29 ALIGN=MIDDLE  ALT=\"A=500%281%2B0.0125%29%5E%2840%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >     Multiply the exponents 4 and 10 to get 40\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=500%281.0125%29%5E%2840%29 ALIGN=MIDDLE  ALT=\"A=500%281.0125%29%5E%2840%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >       Add 1 and 0.0125 to get 1.0125\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=500%281.64361946348701%29 ALIGN=MIDDLE  ALT=\"A=500%281.64361946348701%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >      Raise 1.0125 to the 40 th power to get 1.64361946348701\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=821.809731743505 ALIGN=MIDDLE  ALT=\"A=821.809731743505\"   DISABLED_style= \"max-width:90%; height:auto;\" >       Multiply 500 and 1.64361946348701 to get 821.809731743505\r<BR>\n" );
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document.write( "So if you invest $500 at an interest rate of 5%, which is compounded 4 times a year for 10 years,  the return is about $821.81 (which is rounded to the nearest cent) </SPAN>\n" );
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