document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=32811>Question 32811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having a hard time using the formulas they provided with the information given.<BR>\n" );
document.write( "The number of senior citizens (65 and over) in the US in million n years after 1990 can be estimated by using the formula s= 0.38n+31.2\r<BR>\n" );
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document.write( "The percentage of senior citizens living below the poverty level n years after 1990 can be estimated by using the formula p= -0.25n+12.2\r<BR>\n" );
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document.write( "a) how many senior citizens were there in 2000?<BR>\n" );
document.write( "b) in what year will the percentage of seniors living below the poverty level reach 7%<BR>\n" );
document.write( "c)What is the first year in which we can expect both the number of senioirs to be greater than 40 million and fewer than 7% living below the poverty level?\r<BR>\n" );
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document.write( "I was trying for a, 0.38(2000)+31.2=<BR>\n" );
document.write( "I was also trying for b, -0.25(0.07)+12.2<BR>\n" );
document.write( "I am just stumped on c. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #19245 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=19245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You need to solve 0.38n+31.2>40,000,000<BR>\n" );
document.write( "This will give you a range of \"n\" values.<BR>\n" );
document.write( "Then you need to solve -0.25n+12.2<=0.07<BR>\n" );
document.write( "Then find the lowest value of \"n\" that<BR>\n" );
document.write( "satisfies both of these conditions.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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