Meetings of the board shall be held at the call of the mayor and at such other times as the board may determine. All meetings of the board shall be open to the public. The board shall keep minutes of its proceedings, showing the vote of each member upon each question, or if absent or failing to vote, indicating such fact, and shall keep records of its examination and other official actions, all of which shall be immediately filed in the office of the board and shall be a public record. (Prior code § 11-3-8 (b))