goobyass goobyass 09-02-2016 Mathematics contestada -1 ≤ n+2 ≤ 6 a n ≥ 3 and n ≤ -2 b n ≤ -3 and n ≤ 2 c n ≥ -3 and n ≤ 4 d n ≤ 1 and n ≤ 6