document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183914>Question 183914</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 1994, the life expectancy of males in a certain country was 73.9 years. In 2000, it was 76.4 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( "The linear function E(t) that fits the data is\r<BR>\n" );
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document.write( "E(t) = ____t+____.<BR>\n" );
document.write( "(round to the nearest thenth.)\r<BR>\n" );
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document.write( "Use the function to predict the life expectancy of males in 2003.<BR>\n" );
document.write( "E(9) = ______<BR>\n" );
document.write( "(round to the nearest tenth) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #137982 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=137982\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In 1994, the life expectancy of males in a certain country was 73.9 years. In 2000, it was 76.4 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 two points: (0,73.9), which is the y-intercept,<BR>\n" );
document.write( "and (6,76.4).<BR>\n" );
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document.write( "Find the slope:<BR>\n" );
document.write( "m = (76.4-73.9)/(6-0) = 2.5/6 = 5/12<BR>\n" );
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document.write( "Equation: <BR>\n" );
document.write( "E(t) = (5/12)t + 73.9<BR>\n" );
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document.write( "The linear function E(t) that fits the data is <BR>\n" );
document.write( "E(t) = (5/12)t+ 73.9<BR>\n" );
document.write( "(round to the nearest tenth.) <BR>\n" );
document.write( "Use the function to predict the life expectancy of males in 2003.<BR>\n" );
document.write( "E(9) = (5/12)*9 + 73.9 = 77.65<BR>\n" );
document.write( "(round to the nearest tenth)<BR>\n" );
document.write( "E(9) = 77.7 years.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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