Answer:
$4
Step-by-step explanation:
12÷4=3
20÷4=5
56÷4=14
The least common multiple is 63
Is there any guide or institutions on how to do it?
Answer:
≈ 240,000,000 people
Step-by-step explanation:

≈ 


≈ 
Since the margin of error is 5%, the minimum of supporters will be less than the maximum of disapprovers.
So the third option will be correct. You cannot make certain conclusions based on this survey.