What is the answer to this? x/4-16=(-32)

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?  

If i have 20$ and i gave 5$ away how much i got

How can (square root of 25) ^2 be rewritten?