Mark Twain's greatest inspiration from his novel was his mother, his friend Will Bowen, and the slaves he encountered and a child. He mirrored the Character of Tom Sawyer as himself in the novel. I hope i helped!
Answer: Question 15 is asking you to submit your character sketch. Character sketch: Demonstrate the personality, habits, Physical appearance, and even how they react to certain things(Stress, people, etc.) And its asking to make sure you have no mistakes, and to make sure that everything is made uniform or whole(Logical and consistent). Sorry if i'm wrong.
As far as I remember, a triangle equals 180 degrees. 31+35=66. 180-66=114. 114/38=3. So b=3.