pls help. quickly please

Answer:
The Answer is B 2x+8=4
Step-by-step explanation:
I checked my answer in this app called QuickMath
The answer to A is 2. So does not display the claim.
The answer to B is -2. This is the answer.
The answer to C is -3. It does not apply.
The answer to D is 5. It does not apply.