At a cat show 2/7 of the people have brought at least one cat. The rest are just watching.
3/5 of the people who are just watching are female.
a). What fraction of all the people at the cat show are female and are there just to watch?
b). What fraction of all the people at the cat show are there just to watch and are male?

Plz solve it if you can in steps
And I am really thankful to you

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?