Avan moves with a constant speed of 76 miles per hour. how far can it travel
in 2 1/2 hours?

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.

greet them:

buenas noches.

that is considered night time which is when "good night" is used.