What is the domain of this function? -2-->3
3-->9
4-->12
2-->3

CHIOCES:
A. {3}
B. {-2,2,3,4,9,12}
C. {-2,2,3,4}
D. {3,9,12}

HELP PLEASE AND NOW

An animal shelter has fixed weekly expenses of $750. each animal is the shelter costs an additional $6 a week. during the summer months, the weekly expenses are at least $1170. write and solve an inequality that represents the number of animals at the shelter for expenses to be at least $1170 a week.