The last one is the answer
Answer:
The answer is D) 12
Step-by-step explanation:
Multiple 4 by 3
Answer:

a=8.182 and b=8
Step-by-step explanation:
Weight of the Empire State Building =
pounds.
Weight of the One World Trade Center building= 88,200,000 pounds.
=
The addition of the two:

Comparing with the form: 
a=8.182 and b=8
the answer is A because it shows.
Second 1 because it isn't negative