Graph
which of the following statements are true about the angles in the figure? select all that apply.
∠x and ∠z are vertical angles.
∠x and ∠y are a linear pair.
∠w and ∠z are supplementary.
∠y and ∠z are supplementary.
∠w and ∠x are adjacent.

Concerned about campus safety, college officials want to estimate the percentage of students who carry a gun, knife, or other such weapon. how many randomly selected students must be surveyed in order to be 95 % confident that the sample percentage has a margin of error of two percentage points?