I forgot how to do these equations and I need help please.

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?  

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.