Actions by the board of a legislative character, including the adoption of regulations, shall be in the form of an ordinance, and after adoption the ordinance shall be filed with the secretary and shall be made a matter of public record in the office of the Authority. Other actions by the board shall be by resolution, motion, or in other appropriate form. Executive or ministerial duties may be delegated to one or more commissioners or to an authorized officer, employee, agent, or other representative of the Authority. Ten commissioners, 5 members from each state within the greater metropolitan area, constitute a quorum to conduct business, and an affirmative vote of a majority of the commissioners from each metropolitan area is required to adopt or approve an action of the board. The enacting clause of any ordinance shall be substantially as follows: “Be it ordained by the Board of Commissioners of the Quad Cities Interstate Metropolitan Authority”.