I believe the answer is the second one I am in the same class.
Answer: i need more information in order to help
Answer: It might be a no answer. I don't know which one. I'm so sorry if I'm wrong.
The answer is the first row.
Explanation:
8 * 10^7 = 80,000,000 -- 2 * 10^4 = 20,000
80,000,000 divided by 20,000 = 4,000, so it is 4,000 times larger
Therefore, the first answer is correct.
Hope I helped and good luck!