Please help asap ;)

Find the value of x for which abcd must be a parallelogram -9-6x x-30

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

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?