9÷2/3=?

im a little confused, the method my school gave me is really long and confusing

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?  

Ill mark the brainliest if you me with the these three questions 7,8,9

The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50