Max Jones is a member of a CD (compact disc) club, which enables him to purchase CDs at a much cheaper cost than his local music shop. He's curious as to how much money he saves by purchasing all of...

Max Jones is a member of a CD (compact disc) club, which enables him to purchase CDs at a much cheaper cost than his local music shop. He's curious as to how much money he saves by purchasing all of his CDs via the club rather than the music shop. Determine the output and input.