I need help asap 10 points for who gets it right

Can someone me and do the problem plz so i can understand it more better

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

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?