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Question 251942: `Life expectancies at birth for men and women can be modeled by the following
functions:
w(x)= 0.126x+76.74
M(x)= 0.126x+69.11
W(x) represents the life expectancy of women and M(x) represents the life
expectancy of men. The x represents the years since 1975. (x=0 corresponds to
the year 1975, x=5 corresponds to 1980, and so on).
this goes on until 2000
x is the years since 1975. 1975 0 1985-5 1990-15 1995- 20 2000- 25
I am not understanding this I also have to figure out on a slope is the life
expectantcy of men or women increasing more rapidly. then I have to determine
the birth years in a inequality where the men life expectancy are greater than
women
''.Write an inequality to determine the birth years of women whose life expectancy is at least 85.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Life expectancies at birth for men and women can be modeled by the following
functions:
w(x)= 0.126x+76.74
M(x)= 0.126x+69.11
W(x) represents the life expectancy of women and M(x) represents the life
expectancy of men. The x represents the years since 1975. (x=0 corresponds to
the year 1975, x=5 corresponds to 1980, and so on).this goes on until 2000
x is the years since 1975. 1975 0 1985-5 1990-15 1995- 20 2000- 25
-----------------------------------
I am not understanding this. I also have to figure out on a slope; is the life
expectancy of men or women increasing more rapidly.
The slopes are the same for men and for women.
--------------------
then I have to determine the birth years in a inequality where the men life expectancy are greater than women
M(x)>W(x)
0.126x+69.11 > 0.126x+76.74
When 69.11 > 76.74
which is never.
---------------------
''.Write an inequality to determine the birth years of women whose life expectancy is at least 85.
---
0.126x + 76.74 >= 85
0.126x >= 8.26
x >= 65.555555
1975 + 65.555. = 2040.5555
Rounding up the birth year will be 2041
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Cheers,
Stan H.
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