Question

Solve the open sentence.

–1 ≤ n + 2 ≤ 6

A.
n ≥ –3 and n ≤ 4

B.
n ≤ 1 and n ≤ 6

C.
n ≤ –3 and n ≤ 2

D.
n ≥ 3 and n ≤ –2

Answer 1

I use substitution for these types of questions XD doing this I got the answer was A :D

Answer 2

http://www.wolframalpha.com/input/?i=%E2%80%931+%E2%89%A4+n+%2B+2+%E2%89%A4+6 ^_^ check :D