Can you me with the question # 31.

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?  

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?