Answer:
Explanation:
- According to the given table, the average number of subscribers to the online magazine in 2010 was 320,000.
- Average number of subscribers in 2011 was 384,000 and in 2012 was 460,800.
So, the amount of increase

Now, the percentage of increase

- According to the given table, the maximum average number of subscribers is in the year 2015.
So, the maximum average number of subscribers was 769,262.