anonymous
  • anonymous
Help! Please
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
The number of years a person in the united states is expected to live can be approximated by the equation y=0.189x+70.8,where x is the number of years since 1970.solve this equation for x. use this new equation to determine in which year the approximate life expectancy will be 80.2 years.
anonymous
  • anonymous
I have y=0.189x+70.8 Subtract 70.80 from both sides y- 70.8=0.189x Divide both sides by 0.189x y-70.8/0.189=x
anonymous
  • anonymous
Need to figure out where x is the number of years since 1970.solve this equation for x. use this new equation to determine in which year the approximate life expectancy will be 80.2 years.

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anonymous
  • anonymous
?
jim_thompson5910
  • jim_thompson5910
You have this x = ( y - 70.8)/0.189 plug in y = 80.2 and evaluate/simplify to find x
Yacoub1993
  • Yacoub1993
x=49.735
Yacoub1993
  • Yacoub1993
x= 49 years

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