Greg bought two boxes of balloons. he used half of them to decorate his yard. he use 40 to decorate his porch. he use the rest inside his house. how many balloons did he use inside?

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?