Since this is a square you can set 3x+20=5x then you can solve for x.
Subtract 3x from both sides:
3x-3x+20=5x-3x
20=2x
Divide both sides by 2
20/2=2x/2
10=x
Hope this helps.
Answer:a.The movement of people between regions promotes the spread of culture.
Explanation: Possibilism is the idea that thought the physical environment can affect human actions, people have the ability to adapt to their environment.
The answer is D. The regions are made up of formerly communist countries.