Answer:
Step-by-step explanation:
Mathematical statement 4 € A means 4 is an element f set A.
In other words 4 is the element which is contained in set A.
#1
Area
#2
#3
#4
{x | x ≤ -20}
x + 17 ≤ -3
Subtract 17 from each side
x + 17-17 ≤ -3-17
x ≤ -20