Evaluating linear piecewise functions

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

Which choice represents the sample space ,s for this event

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?