Write four type of set on the basis of Cardinal numbers write one example​

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 distance between point a and b

How do you write y-10=2 (x-8) in standard form