In the 5 lb book of problems, #22 on page 383:
|3 + 3x| < -2x
A B
--- ---
|x| 4
I solved the inequality like this:
3 + 3x < -2x
5x < -3
x < -3/5
or
3 + 3x > 2x
x > -3
Giving me an answer of:
x < -3/5 OR x > -3
But according to the answer in the book, it shows:
-3 < x < -3/5
which means that x > -3 AND x < -3/5.
Why AND and not OR in this case?