document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161069>Question 1161069</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The spread of a Virus. The number of MRSA (methicillin-resistant Staphylococcus aureus) cases has been rising sharply in England and Wales since 1997. In 1997,4060 cases were reported. The number of cases reported in 2003 was 7455 . How many cases will be expected in 2011? (Let=0 correspond to 1997.) Use the formula N=Noe^(rt), where N represents the number of cases reported.\r<BR>\n" );
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document.write( "Round to the nearest case. (Use  rounded to two decimal places in the calculation.)reported cases in 2011.\r<BR>\n" );
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document.write( "please solve <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #784502 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=784502\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> MRSA is a bacterium, NOT a virus.   People need to understand the difference, and your teacher should know this.  Why?  For one, viruses are not treatable by taking antibiotics, as those only work for bacterial infections.  \r<BR>\n" );
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document.write( "Yes, sometimes when a virus has infected a person, a doctor will prescribe antibiotics as a protective measure against secondary bacterial infections, but that is not to treat the primary viral infection. <br>\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+N+=+N%5B0%5De%5E%28rt%29+ ALIGN=MIDDLE  ALT=\"+N+=+N%5B0%5De%5E%28rt%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br>\r<BR>\n" );
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document.write( "t=0 for 1997  ===>  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+N%5B0%5D+=+4060+ ALIGN=MIDDLE  ALT=\"+N%5B0%5D+=+4060+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br>\r<BR>\n" );
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document.write( "Use the 2003 data to find r (in 2003, t=6 yrs):<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7455+=+4060e%5E%28r%2A6%29+ ALIGN=MIDDLE  ALT=\"+7455+=+4060e%5E%28r%2A6%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+ln%287455%2F4060%29+=+r%2A6+ ALIGN=MIDDLE  ALT=\"+ln%287455%2F4060%29+=+r%2A6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=++r=+0.1012836+ ALIGN=MIDDLE  ALT=\"++r=+0.1012836+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br>\r<BR>\n" );
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document.write( "So we have the full equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+N+=+4060e%5E%280.1012836%2At%29+ ALIGN=MIDDLE  ALT=\"+N+=+4060e%5E%280.1012836%2At%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "For 2011, t=14:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+N+=+4060e%5E%280.1012836%2A14%29+ ALIGN=MIDDLE  ALT=\"+N+=+4060e%5E%280.1012836%2A14%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+highlight%28+16762.65+%29+ ALIGN=MIDDLE  ALT=\"+highlight%28+16762.65+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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