Jake is Cassie's older brother. One day they are walking home from school when a cold front rolls in and the temperature drops 20 degrees. Jake has dressed more appropriately for the weather than Cassie. He takes off his hooded sweatshirt and offers it to her. She gratefully accepts. Jake is now colder, but he is happier.

Jake can best be described as _____.

Dear Mom,

Please come pick me up as soon as possible! I hate it here at summer camp. If you let me come home, I promise to keep my room clean for a year. I will even clean the bathroom! Please come soon!

- Jeremy

The author's repeated use of exclamation marks and the word "please" helps to establish what tone?