Question

|2x+2|<1 find the solution set of the inequality. write answer using interval notation.

Answer 1

|2x+2|<1
-1< 2x+2 < 1
-0.5 < x+1 < 0.5
-1.5 < x < -0.5

Interval notation:
(-1.5, -0.5)

Answer 2

I'm doing homework on this online software. That's what I had gotten too, and it told me its wrong :S Now it gave me this problem: |3x+7|<6

Answer 3

Well, wolfram comes up with the same answer for the first one...

http://www.wolframalpha.com/input/?i= |2x%2B2|%3C1

Here's the second one:

(-13/3,-1/3)
http://www.wolframalpha.com/input/?i= |3x%2B7|%3C6