The Rathdown Riddle

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Across
  1. 4. He's owed 3000 ducats(7)
  2. 5. Comes with a loyalty card(13)
  3. 6. What you do with a book(4)
  4. 7. Subject with equations(4)
Down
  1. 1. Fifth Years worst nightmare(14)
  2. 2. One of Rathdown's favourite mascots(5)
  3. 3. _ is life(4)
  4. 6. Rathdown Students Nickname(4)