Question 487058
{{{-0.47t + 22.19<10}}}
{{{-0.47t <10-22.19}}}
{{{-0.47t <-12.19}}}
{{{t>(-12.19)/(-0.47)}}}
{{{t>25.9}}}
the first year in which the percentage of female smokers is less than 10% is {{{1997+26=2023}}}