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Women in Labor Force The percent of women in the United States who were in the civilian labor force increased rapidly for several decades and then stabilized. If $$x$$ represents the number of years since $$1950$$ , the function $$f ( x ) = \frac { 67.21 } { 1 + 1.081 e ^ { - x / 24.71 } }$$
$$\text { (a) about } 61 \% \text { (b) } 1989$$