Question

Solve the open sentence.

–2 ≤ n + 4 ≤ 7



A.


n ≥ 6 and n ≤ –4


B.


n ≤ 2 and n ≤ 7


C.


n ≤ –6 and n ≤ 4


D.


n ≥ –6 and n ≤ 3

Answer 1

Subtract 4 from both sides to isolate the variable n. In the case where n is a negative, you must reverse the greater than or less than symbol, but this is not that case. So the answer is d.