I have no idea on D. Sorry. I hope this helps. They may not be right I didn’t quite understand the directions.
Divide both sides by 2 2(x+2)=-
move constant to the right x+2=-2
calculate x=-2-2
x=-4
She is not wrong. 12.6 is less than 12.63
ANSWER
C. 28
EXPLANATION
The given expression is

We want to evaluate this function at x=-2.
We just have to substitute x=-2 into the given expression.
In other words, we have to replace x with -2 wherever we see x in the expression

We evaluate the exponent to get

We multiply next to get:

We now add to obtain:

The correct answer is C
Your answer for your question is going to be.... um.... sorry I forgot