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

Question

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

nikato · Answer

Ok. Let my < be less than or equal to sign and same with my >

So you have -3<n+6<7
Break it up into two

-3<n+6.                   n+6<7
 -6.   -6.                    -6.  -6
----------               -------------
-9<n.                       n<1