I think it is C. However, it should just be rock and water/ice.
Answer:
In most states, state offices include: Governor, Lieutenant Governor, Secretary of State, and Attorney General, State Supreme Court Justices, Comptroller, Treasurer, State Senators, and State Legislators. These officials are elected by the voters of the districts they serve.
People use to believe the universe was centered around the Earth. BUt now with modern technology we know that it is obviously not.
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.