Plz help

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

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6