document.write( "Question 210754: 1992 the life expectancy of males in a certain county was 69.4 years, in 1998 it was 72.9 years, let E repersent the life expectancy in year, and t repersent the number of years since 1992.
\n" );
document.write( "E(T)=___t+____
\n" );
document.write( "E(11)=_______ \n" );
document.write( "
Algebra.Com's Answer #159450 by RAY100(1637)![]() ![]() ![]() You can put this solution on YOUR website! E(t) = 69.4 + ,5833t \n" ); document.write( ". \n" ); document.write( "where 69.4 = E(0),,,.5833 = (72.9-69.4)/6 \n" ); document.write( ". \n" ); document.write( "check,,,,E(6) = 69.4 +6(.58833) = 72.9,,,,,ok \n" ); document.write( ". \n" ); document.write( "E(11) = 69.4 + 11(.58833) = 75.8 \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |