Question

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

Answer 1

B) n ≥ - 9 and n ≤ 1

Explanation:

-3 <= n+6 <= 7

subtract 6 from all 3 sides

-3 -6 <= n+6 -6 <= 7-6

-9 <= n <= 1