BeautyQueen97 BeautyQueen97 03-12-2018 Mathematics contestada Please help!!! Solve the open sentence -3 ≤ n + 6 ≤ 7 A) n ≤ - 9 and n ≤ 6 B) n ≥ - 9 and n ≤ 1 C) n ≤ 3 and n ≤ 7 D) n ≥ 9 and n ≤ 7