Can somebody who has done word problems plz help give the correct equations for each one :DD thanks! WILL MARK BRAINLIEST WHOEVER ANSEERS THEM FIRST :D

Which pair of angles are vertical angles? ∠1 and ∠4 ∠1 and ∠2 ∠2 and ∠4 ∠2 and ∠3

Two lines that do not intersect are skew. always sometimes or never

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1