Which of the following polynomials contains like terms?

-4y+y10-y15+y11

x5-4-x12+x8

z3+z10-5z

-x7+x7+x5-4

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes

How do i do this? i don’t understand