The answer is C.
Hope that helps you.
The first step for solving this is to cancel equal terms on both sides of the inequality.

< 0
Now multiply both sides of the inequality by -2 and flip the inequality sign.
-2 × (

) > -2 × 0
Remember that multiplying two negatives together always equals a positive,, so the expression changes to the following:
2 ×

> -2 × 0
Reduce the numbers with 2.
x > -2 × 0
Any expression multiplied by 0 equals 0,, so the correct answer to your question will be:
x > 0
Let me know if you have any further questions.
:)
I think the answer is b. i'm not completely sure...
If you're only counting the smallest triangles, then 8.
If you're counting all possible triangles including triangles made of other triangles, then 16. Each diagonal gives 2, the combined diagonals give 4, and the unit triangles give 8 for a total of 2 + 2 + 4 + 8 = 16.