If you find the difference between 3 and 1 you would get 2 and then if you found the difference of 7 and 3 you would get 4. So basically the difference of the numbers is doubling. Hope this helps!
Answer:
3
Step-by-step explanation:
1, 5, 25
2x is not a way to express this. You could use 2 + x or x +2. But 2x is x multiplied by 2. x + 2 is x plus 2.
2,320 people is the new population amount.
