Is the number of cups greater than or less than the number of quart

Which of the following expressions is equal to 2x^2+8

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?  

Can someone me out here number 4 plz