document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=251636>Question 251636</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The percentage of adult smokers in the U.S. is declining each year. If t represents the number of years since 1997, then\r<BR>\n" );
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document.write( "P(t) = -0.51t + 24.675\r<BR>\n" );
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document.write( "represents the corresponding percentage of adults who smoked cigarettes during that year. \r<BR>\n" );
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document.write( "Write an inequality that can be used to determine the first year in which the percentage of adult smokers falls below 15%. \r<BR>\n" );
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document.write( "Solve the inequality in part a using an algebraic approach. <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 #183557 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=183557\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The percentage of adult smokers in the U.S. is declining each year. If t represents the number of years since 1997, then<BR>\n" );
document.write( "P(t) = -0.51t + 24.675<BR>\n" );
document.write( "represents the corresponding percentage of adults who smoked cigarettes during that year.<BR>\n" );
document.write( "Write an inequality that can be used to determine the first year in which the percentage of adult smokers falls below 15%.<BR>\n" );
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document.write( "Solve the inequality in part a using an algebraic approach. <BR>\n" );
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document.write( "Set P(t) to 15 and solve for t:<BR>\n" );
document.write( "P(t) > -0.51t + 24.675<BR>\n" );
document.write( "15 > -0.51t + 24.675<BR>\n" );
document.write( "15-24.675 > -0.51t<BR>\n" );
document.write( "-9.675 > -0.51t<BR>\n" );
document.write( "-9.675/(-0.51) < t<BR>\n" );
document.write( "18.97 years < t<BR>\n" );
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document.write( "That is t is greater than 18.97 years </SPAN>\n" );
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