Answer:
TO INFORM: How to knit, Dubstep History
TO PERSUADE: Save the Panther!
TO ENTERTAIN: Book of Jokes, Mystery stories
Step-by-step explanation:
A purpose to persuade: usually has an intriguing title, author wants you to engage in something.
A purpose to inform: has many interesting info about a particular topic. The author wants you to inform you about it. Expository writing
A purpose to entertain: the author wants to amuse the audience. Jokes and scary stories are some examples of topics to write for entertainment.
Hope this helps!