the developers of a new social media website think that its membership will grow by the same scale factor every month. At the end of the first month it has 20,000 members,and at the end of the second month it has 25,000 members.
1. Explain which information in the statement above suggests that this can be modelled with a geometric sequence
2. Determine how many members this model would predict for the website to have at the end of the 12th month