let f(x) = (x-4) and g(x) = (x^2) for f(x) + g(x) perform the function operation and then find the domain

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?  

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes