How to solve. 9x + y = -25
5x - y = -3

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?  

What is the slope of (0,32) and (100,212)

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.