document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=91372>Question 91372</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I thought biology was difficult, geez. I don't see any potential solutions for the 1st question. the x's cancel each other out. wait x = -2 by subtracting 2 from both sides gives x = -2?\r<BR>\n" );
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document.write( "1.sq root /x + 2 - x = 0 any potential solutions? Cancel out the x’s <BR>\n" );
document.write( "This is undefined? <BR>\n" );
document.write( "2.	 <BR>\n" );
document.write( "C computes the cost in millions of $ of implementing a city infastructure project when x percent of the citizens participate. <BR>\n" );
document.write( "C(x) = 1.5x / 100-x <BR>\n" );
document.write( "Using this model, approximately what is the cost if 40% of the citizens participate? <BR>\n" );
document.write( "Using this model, estimate the percentage of participation that can be excepted if $5 million is spent on this infastructure project? Set up an equation and solve algebraically. Round to the nearest whole percent.<BR>\n" );
document.write( "3.	<BR>\n" );
document.write( "Suppose that N=squarerootx +2 models the number of cases of an infection, in millions, of a disease x years from now. <BR>\n" );
document.write( "a) Approximately how many cases of the infection will there be 16 years from now?<BR>\n" );
document.write( "b) In approximately how many years will there be 7 million cases?<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 #66334 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=66334\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.sq root /x + 2 - x = 0 any potential solutions?<BR>\n" );
document.write( "Is it sqrt(x) or is it sqrt(x+2) ?<BR>\n" );
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document.write( "2. <BR>\n" );
document.write( "C computes the cost in millions of $ of implementing a city infastructure project when x percent of the citizens participate. <BR>\n" );
document.write( "C(x) = 1.5x / 100-x <BR>\n" );
document.write( "Using this model, approximately what is the cost if 40% of the citizens participate? \r<BR>\n" );
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document.write( "C(40) = 1.5*40/(100-40) = 60/60 = 1 million dollars<BR>\n" );
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document.write( "Using this model, estimate the percentage of participation that can be excepted if $5 million is spent on this infastructure project? Set up an equation and solve algebraically. Round to the nearest whole percent.<BR>\n" );
document.write( "5 = 1.5x/(100-x)<BR>\n" );
document.write( "500-5x = 1.5x<BR>\n" );
document.write( "500 = 6.5x<BR>\n" );
document.write( "x = 76.9%<BR>\n" );
document.write( "-------------------3. <BR>\n" );
document.write( "Suppose that N=sqrt(x) +2 models the number of cases of an infection, in millions, of a disease x years from now. <BR>\n" );
document.write( "a) Approximately how many cases of the infection will there be 16 years from now?<BR>\n" );
document.write( "N = sqrt(16)+2 = 4+2 = 6 million<BR>\n" );
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document.write( "b) In approximately how many years will there be 7 million cases?<BR>\n" );
document.write( "7 = sqrt(x)+2<BR>\n" );
document.write( "5 = sqrt(x)<BR>\n" );
document.write( "x = 25 yrs<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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