Pls help ASAP pls ASAP

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

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?  

When y’all answer can y’all explain too !