Quadratic Inequality: Solving for x | No Quotes

[icystrike]

Homework Statement

[/B]
As attached

Homework Equations

The Attempt at a Solution

[/B]
The answer is stated as option A.

However, my solution is -6≤x≤3;
I can seems to find an option that fits the solution.

 

[davidmoore63@y]

I agree. The question is wrong.

 

[RUber]

Your solution looks solid. There must be a problem with the question. Just trying values in the options show that you are correct.
7: 49 < 18-21 -- Nope.
-7: 48 < 18+21 -- Nope.
4: 16 < 18-12 -- Nope.
etc.
You can rule out all the options on the page.

 

[SteamKing]

Man, you've been having a string of bad luck with your textbooks containing faulty problems. If the problems are this bad, I wonder if the material is equally flaky?

 

[FeDeX_LaTeX]

Agreed, those options are wrong (and your solution is correct). There's probably a typo in either B or C.