1.List the total cost of purchasing 1 book, 2 books, 3 books.2.Identify the sequence of costs of books as arithmetic or geometric.3.Write a formula (either recursive or explicit) for computing the cost of joining the club and buyingnbooks.4.Find the cost of joining the club and buying 32 books.Jerry finds an anti-bullying post on Facebook.He likes it and decides to repost it.His friends like it andmany of them repost it too.As this continues, the number of people who have seen the post triples eachhour.5.List the total number of people who have seen the post each hour, starting with one person, Jerry, in the firsthour.6.Identify the sequence of number of people who have seen the post as arithmetic or geometric.7.Write a formula (either recursive or explicit) for computing the total number of people who have seen the postfor each hour.