May had 10millon cookies for a party her friend took 3millon how much does she have left

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?  

Combine like terms to make a simpler expression 3z+z

What are the domain and range of the function f(x)=2^x+1