An electric sign that showed the speed

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

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?  

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)