What is the range of the data set 2 | 1, 3, 8, 8 5 | 2, 4, 6, 6, 7 6 | 0, 1, 1 key: 6| 0 means 60 i do not get this plz solve

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?