document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=549804>Question 549804</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Angela currently has an account balance of $4,298.55. She opened the account 15 years ago with a deposit of $1,987.22. If the interest compounds monthly, what is the interest rate on the account? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358080 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=358080\">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=4298.55=1987.22%281%2Br%2F12%29%5E%2812%2A15%29 ALIGN=MIDDLE  ALT=\"4298.55=1987.22%281%2Br%2F12%29%5E%2812%2A15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=4298.55 ALIGN=MIDDLE  ALT=\"A=4298.55\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=1987.22 ALIGN=MIDDLE  ALT=\"P=1987.22\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=12 ALIGN=MIDDLE  ALT=\"n=12\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=15 ALIGN=MIDDLE  ALT=\"t=15\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4298.55=1987.22%281%2Br%2F12%29%5E%28180%29 ALIGN=MIDDLE  ALT=\"4298.55=1987.22%281%2Br%2F12%29%5E%28180%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12 ALIGN=MIDDLE  ALT=\"12\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15 ALIGN=MIDDLE  ALT=\"15\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=180 ALIGN=MIDDLE  ALT=\"180\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4298.55%2F1987.22=%281%2Br%2F12%29%5E%28180%29 ALIGN=MIDDLE  ALT=\"4298.55%2F1987.22=%281%2Br%2F12%29%5E%28180%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1987.22 ALIGN=MIDDLE  ALT=\"1987.22\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.16309719105081=%281%2Br%2F12%29%5E%28180%29 ALIGN=MIDDLE  ALT=\"2.16309719105081=%281%2Br%2F12%29%5E%28180%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Evaluate <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4298.55%2F1987.22 ALIGN=MIDDLE  ALT=\"4298.55%2F1987.22\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.16309719105081 ALIGN=MIDDLE  ALT=\"2.16309719105081\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=root%28180%2C2.16309719105081%29=1%2Br%2F12 ALIGN=MIDDLE  ALT=\"root%28180%2C2.16309719105081%29=1%2Br%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the 180th root of both sides.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.00429553882184=1%2Br%2F12 ALIGN=MIDDLE  ALT=\"1.00429553882184=1%2Br%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > Take the 180th root of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.16309719105081 ALIGN=MIDDLE  ALT=\"2.16309719105081\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.00429553882184 ALIGN=MIDDLE  ALT=\"1.00429553882184\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.00429553882184-1=r%2F12 ALIGN=MIDDLE  ALT=\"1.00429553882184-1=r%2F12\"   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=0.00429553882183731=r%2F12 ALIGN=MIDDLE  ALT=\"0.00429553882183731=r%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > Combine like terms.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2A0.00429553882183731=r ALIGN=MIDDLE  ALT=\"12%2A0.00429553882183731=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply boths sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12 ALIGN=MIDDLE  ALT=\"12\"   DISABLED_style= \"max-width:90%; height:auto;\" > to isolate \"r\".\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0515464658620477=r ALIGN=MIDDLE  ALT=\"0.0515464658620477=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12 ALIGN=MIDDLE  ALT=\"12\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.00429553882183731 ALIGN=MIDDLE  ALT=\"0.00429553882183731\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0515464658620477 ALIGN=MIDDLE  ALT=\"0.0515464658620477\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=0.0515464658620477 ALIGN=MIDDLE  ALT=\"r=0.0515464658620477\"   DISABLED_style= \"max-width:90%; height:auto;\" > Rearrange the equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=0.0515 ALIGN=MIDDLE  ALT=\"r=0.0515\"   DISABLED_style= \"max-width:90%; height:auto;\" > Round to the nearest ten-thousandth.\r<BR>\n" );
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document.write( "So the interest rate is 5.15% (multiply by 100 to convert to a percentage)<BR>\n" );
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