Which graph describes the open sentence –5 ≤ n – 2 ≤ 2?

The answer would be -3≤n≤4 
You need to break it up into two problem
-5≤n-2
n-2≥-5  Switch sides
n-2+2≥+5+2
n≥-3

n-2≤2
n-2+2≤2+2
n≤4
-3≤n≤4

I hope this helps