SOLUTION: Can someone help please
In 1990, the life expectancy of males was 64.7 years, in 1995 it was 67.8 years. Let E represent the life expectancy inyear t and let t represent the numbe
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Question 250342: Can someone help please
In 1990, the life expectancy of males was 64.7 years, in 1995 it was 67.8 years. Let E represent the life expectancy inyear t and let t represent the number of years since 1990.
E(t)=?t+? round to the nearest tenth
Use the function to predict the life expectancy in 2005
E(15)=? round to the nearest tenth
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
In 1990, the life expectancy of males was 64.7 years, in 1995 it was 67.8 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990.
E(t)=?t+? round to the nearest tenth
:
Find the slope
In 1990; x1=0 and y1=64.7
In 1995; x2=5 and y2=67.8
:
Find the slope (m) using the slope equation: m =
m = = = .62
therefore:
The Linear function E(t) that fits the data is.
E(t)= .62t + 64.7
:
Use the Function to predict the life expectancy in 2005.
This means t=15; substitute 15 for t in the equation
E(15)= .62(15) + 64.7
E(15)= 9.3 + 64.7
E(15)= 74 yrs is the life expectancy in 2005
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