Please helps rEeeEeeE

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)