Determine the range of xxx for ∣x−1∣+∣x+3∣≤6|x-1| + |x+3| \leq 6∣x−1∣+∣x+3∣≤6.
−4≤x≤2-4 \leq x \leq 2−4≤x≤2
−3≤x≤1-3 \leq x \leq 1−3≤x≤1
−2≤x≤4-2 \leq x \leq 4−2≤x≤4
−5≤x≤1-5 \leq x \leq 1−5≤x≤1