Ineed with ! time is running ! will mark ! take a look at all photos, to answer all questions.

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

What is the solution set of the quadratic inequality x2- 5< 0? o {xl-55x55{x- 155x55){xl -55x5 15){x1 - 15 sx5/5)

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42