Whats the story and questions?
In the sentence provided, "Racers, start your engines" the word <em>Racers</em> represents a noun of direct address.
These nouns of direct address are defined as words that name a person, places, things or ideas. In the particular case of the sentence provided this name (Racers) reffers to the persons who are taking part in the career.
Hello!
The narrative voice in this passage shows that Squeaky has little respect for people she thinks are shallow.
The quotation "a dumb question like that doesn't deserve an answer" demonstrates a lack of respect for Mary Louise. Additionally, the passage mentions that "it's not a smile at all" which describes a sense of shallowness.
I hope this helps you! Have a great day!
- Mal
this is a complex sentence. jghwieurghwehjkfgwirughviwuerbgks