Answer :

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ANSWERS:

a. (5, 2)

b. -3 ≤ x ≤ 2    and    4 ≤ x ≤ 6

c. -5 ≤ x ≤ -3     and    6 ≤ x ≤ 7

d. 2 ≤ x ≤ 4

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