What is the measure of arc QR?

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?  

One of the problems with our current election system is? ?

To increase her number of students, the instructor put a coupon in the local paper offering to waive the one-time fee for new students. what is the value of the coupon?