document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185731>Question 185731</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a=p(1+r/n)^nt<BR>\n" );
document.write( "5000=250(1+r/4)^40<BR>\n" );
document.write( "? I don't know where to go from here. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139379 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=139379\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm assuming that you want to solve for \"r\" right? If so, then I'll start where you left off.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5000=250%281%2Br%2F4%29%5E40 ALIGN=MIDDLE  ALT=\"5000=250%281%2Br%2F4%29%5E40\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given equation\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5000%2F250=%281%2Br%2F4%29%5E40 ALIGN=MIDDLE  ALT=\"5000%2F250=%281%2Br%2F4%29%5E40\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 250\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20=%281%2Br%2F4%29%5E40 ALIGN=MIDDLE  ALT=\"20=%281%2Br%2F4%29%5E40\"   DISABLED_style= \"max-width:90%; height:auto;\" > Reduce\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=root%2840%2C20%29=1%2Br%2F4 ALIGN=MIDDLE  ALT=\"root%2840%2C20%29=1%2Br%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the 40th root of both sides (this is probably where you got stuck)\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0778=1%2Br%2F4 ALIGN=MIDDLE  ALT=\"1.0778=1%2Br%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Evaluate the 40th root of 20 to get roughly 1.0778\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0778-1=r%2F4 ALIGN=MIDDLE  ALT=\"1.0778-1=r%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 1 from both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0778=r%2F4 ALIGN=MIDDLE  ALT=\"0.0778=r%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0778%2A4=r ALIGN=MIDDLE  ALT=\"0.0778%2A4=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply both sides by 4 to isolate \"r\"\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.3112=r ALIGN=MIDDLE  ALT=\"0.3112=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply\r<BR>\n" );
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document.write( "So the answer is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=0.3112 ALIGN=MIDDLE  ALT=\"r=0.3112\"   DISABLED_style= \"max-width:90%; height:auto;\" > which means that the interest rate is 31.12% (just multiply by 100 to get a percentage) </SPAN>\n" );
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