Unless otherwise specially provided, a governing body may exercise any of the powers conferred upon it at any meeting of the governing body, regular, special or adjourned at which a quorum is present. A majority of the governing body shall constitute a quorum except as may be otherwise provided in the State and Local Government Conflict of Interests Act (§ 2.2-3100 et seq.). Meetings of governing bodies shall be subject to the applicable provisions of the Virginia Freedom of Information Act (§ 2.2-3700 et seq.).