Can someone anyone this is an example problem for how my teacher wants our work to be shown with this layout i don’t know what to do someone me

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

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square