document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=530474>Question 530474</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1993, the life expectancy of males in a certain country was 61.9 years. In 2000, it was 65.6 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.\r<BR>\n" );
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document.write( "E(t)=_t+_   (round to the nearest tenth\r<BR>\n" );
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document.write( "Use the function to predict the life expectancy in 2005<BR>\n" );
document.write( "E(12)=_ </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #350099 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=350099\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In 1993, the life expectancy of males in a certain country was 61.9 years.<BR>\n" );
document.write( "Let x = 0 represent 1993.<BR>\n" );
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document.write( "In 2000, it was 65.6 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.<BR>\n" );
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document.write( "You have 2 points: (0,61.9), (7,65.6)<BR>\n" );
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document.write( "slope = (65.6-61.9)/(7-0) = 0.5286<BR>\n" );
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document.write( "E-intercept is E(0) = 61.9<BR>\n" );
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document.write( "E(t)= 0.53t+61.9_ (round to the nearest tenth<BR>\n" );
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document.write( "Use the function to predict the life expectancy in 2005<BR>\n" );
document.write( "E(12)= 0.53*12+61.9 = 68.26<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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