Answer
a. $48\%$
b. $47.8 \%$
c. $52$ years or year 2024.
Work Step by Step
a. Given $p=2.2\sqrt t +36.2$ for the percentage of jobs held by women, use the given red curve, locate the horizontal coordinate as $t=2000$, read the corresponding vertical value to give $p\approx48\%$
b. As $t$ starts at year $1972$, we have $t=2000-1972=28$ for year 2000, thus $p=2.2\sqrt {28} +36.2\approx47.8 \%$
c. For $p=52\%$, we have $2.2\sqrt t +36.2=52$ which gives $\sqrt t\approx7.18$ and $t\approx52$ years which corresponds to $1972+52=2024$ or year 2024.
