The term utilitarian is used to identify artwork that

Prioritizes function over formal aesthetics.

Explanation:

Utilitarian art refers to any artwork that sees function as its main priority, while still looking for a formal aesthetic but not as the main goal.

This kind of art produces elements that can be used for a specific function, not only as an object to be appreciated for its beauty.

An example would be an art object that can also hold water, or tell the time.

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.