Question 937469
Solve:- -7 < 4x+1 <= 23
(minus 7 is smaller than 4x+1 is smaller than and eq
-7 < 4x+1 &#8804; 23
add(-1)
-8 < 4x &#8804; 22
divide by 4
-2 < x &#8804; 5.5
number line:
<....-2<==>5.5....>
solution: (-2,5.5]