XYZ Co. incurred the following costs related to the office building used in operating its sports supply company: (1) Replaced a broken window. (2) Replaced the roof that had been on the building 23 years. (3) Serviced all the air conditioners before summer started. (4) Replaced the air conditioners in the customer service areas. (5) Added a warehouse to the back of the building. (6) Repainted the interior walls. (7) Installed window shutters on all windows. Which expenditures would be classified as capital expenditures?