Write a count on 1 fact to show a sum of 8.then write a doubles fact to show a sum of 8

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g