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AriannasMommy2010

  • 3 years ago

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  1. AriannasMommy2010
    • 3 years ago
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    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.

  2. AriannasMommy2010
    • 3 years ago
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    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

  3. AriannasMommy2010
    • 3 years ago
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    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.

  4. AriannasMommy2010
    • 3 years ago
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    ?

  5. jim_thompson5910
    • 3 years ago
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    You have this x = ( y - 70.8)/0.189 plug in y = 80.2 and evaluate/simplify to find x

  6. Yacoub1993
    • 3 years ago
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    x=49.735

  7. Yacoub1993
    • 3 years ago
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    x= 49 years

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