2. After selling a total of 427 adult and student tickets the cashier at a theatre had receipts of $3263.50. If adult tickets sell for $8.50 and student tickets for $6.50,
how many of each type of ticket were sold?

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?  

Consider the first four terms of the sequence below. what is the 8th term of this sequence?

How is the interquartile range calculated?