There are thirty-nine 8 text th end text graders in the Kennedy Middle School student council. The number of 8 text th end text graders is twelve fewer than three times the number of 7 text th end text graders in the student council. Which equation can be used to determine n comma the number of 7 text th end text graders in the student council?.

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.  

the answer is counterpoint.

counterpoint definition: "the art or technique of playing a melody or melodies in conjunction with another, according to fixed rules."

counterpoint is present in a lot of baroque music- such as bach (notably his wtc prelude and fugues) and scarlatti, but can also be found in music by mozart, beethoven. it can even be found in music as modern as john williams!