What's the name of boxing stage​

What is an insulae ? a) a roman building for the lower classes b) a roman building for sports c) a roman building for the wealthy

If g(x) is the inverse of f(x) and (x) = 4x + 12, what is g(x)?

Where does middle c get it’s name? a. it sits in the middle of a brass clef b. it sits in the middle of the grand staff c. if sits in the middle of the alto clef d. its sits in the middle of the treble clef