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b. -88 ≤ x
c. r ≤ 0
d. -5/2 ≥ z
n - 3 ≥ 8
n ≥ 8 + 3
n ≥ 11
b)
-16 ≤ x + 72
-x ≥ 72 + 16
-x ≥ 88
x ≥ -88
c)
r - 5 ≤ -5
r ≤ -5 + 5
r ≤ 0
d)
-5 1/2 ≥ z - 3
-11/2 ≥ z - 3
2(-11/2) ≥ 2(z - 3)
-11 ≥ 2z - 6
-2z ≤ -6 + 11
-2z ≤ 5
z ≤ 5/-2
z ≤ -2 1/2