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AriannasMommy2010
 2 years ago
Best ResponseYou've already chosen the best response.1The 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.

AriannasMommy2010
 2 years ago
Best ResponseYou've already chosen the best response.1I have y=0.189x+70.8 Subtract 70.80 from both sides y 70.8=0.189x Divide both sides by 0.189x y70.8/0.189=x

AriannasMommy2010
 2 years ago
Best ResponseYou've already chosen the best response.1Need 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.

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.0You have this x = ( y  70.8)/0.189 plug in y = 80.2 and evaluate/simplify to find x
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