What quadrant(s) is graph #5 in?

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?  

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

State one method by which you can recognize a perfect square trinomial.