document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1153141>Question 1153141</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The intensity levels I of two earthquakes measured on a seismograph can be compared by the formula <BR>\n" );
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document.write( "I1<BR>\n" );
document.write( "I2\r<BR>\n" );
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document.write( " = M1 − M2<BR>\n" );
document.write( " where M is the magnitude given by the Richter scale. An earthquake of magnitude 6.4 hit a city. Two years later, that same region experienced yet another, more devastating earthquake, this time with a magnitude of 8.0. How many times greater was the intensity of the second earthquake? Round to the nearest whole number.<BR>\n" );
document.write( " times greater </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #775297 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=775297\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28I%5B1%5D%2FI%5B2%5D%29=+M%5B1%5D+%E2%88%92+M%5B2%5D ALIGN=MIDDLE  ALT=\"log%28I%5B1%5D%2FI%5B2%5D%29=+M%5B1%5D+%E2%88%92+M%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "given: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M%5B1%5D=8.0 ALIGN=MIDDLE  ALT=\"M%5B1%5D=8.0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M%5B2%5D=6.4 ALIGN=MIDDLE  ALT=\"M%5B2%5D=6.4\"   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=log%28I%5B1%5D%2FI%5B2%5D%29=+8.0+-6.4 ALIGN=MIDDLE  ALT=\"log%28I%5B1%5D%2FI%5B2%5D%29=+8.0+-6.4\"   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=log%28I%5B1%5D%2FI%5B2%5D%29=+1.6 ALIGN=MIDDLE  ALT=\"log%28I%5B1%5D%2FI%5B2%5D%29=+1.6\"   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=I%5B1%5D%2FI%5B2%5D=antilog%281.6%29 ALIGN=MIDDLE  ALT=\"I%5B1%5D%2FI%5B2%5D=antilog%281.6%29\"   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=I%5B1%5D%2FI%5B2%5D=39.81072 ALIGN=MIDDLE  ALT=\"I%5B1%5D%2FI%5B2%5D=39.81072\"   DISABLED_style= \"max-width:90%; height:auto;\" > &asymp; <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40 ALIGN=MIDDLE  ALT=\"40\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "or this way:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28I%5B1%5D%29=8.0 ALIGN=MIDDLE  ALT=\"log%28I%5B1%5D%29=8.0\"   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=I%5B1%5D=antilog%288.0%29 ALIGN=MIDDLE  ALT=\"I%5B1%5D=antilog%288.0%29\"   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=I%5B1%5D=100000000 ALIGN=MIDDLE  ALT=\"I%5B1%5D=100000000\"   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=log%28I%5B2%5D%29=6.4 ALIGN=MIDDLE  ALT=\"log%28I%5B2%5D%29=6.4\"   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=I%5B2%5D=antilog%286.4%29 ALIGN=MIDDLE  ALT=\"I%5B2%5D=antilog%286.4%29\"   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=I%5B2%5D=2511886.4 ALIGN=MIDDLE  ALT=\"I%5B2%5D=2511886.4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=I%5B1%5D%2FI%5B2%5D=100000000%2F2511886.4=39.81072 ALIGN=MIDDLE  ALT=\"I%5B1%5D%2FI%5B2%5D=100000000%2F2511886.4=39.81072\"   DISABLED_style= \"max-width:90%; height:auto;\" > &asymp; <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40 ALIGN=MIDDLE  ALT=\"40\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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