Question

Which of the following describes the graph of {x | x ≤ 1} U {x | x ≥ 4}?

closed circles on 1 and 4 with a line segment between
closed circles on 1 and 4 with arrows pointing outward
the entire number line
no solution

Answer 1

since you need to find the union of x=<1 and x>=4, the answer will be all numbers that are less or equal to 1 OR larger or equal to 4.

Answer 2

so B.

Answer 3

thanks

Answer 4

np :)