This part is intended to aid the state through the furtherance of the purposes of the part by providing an appropriate and independent instrumentality of the state with full and adequate powers to fulfill its functions. Except as expressly provided in this part, no proceeding, notice, or approval shall be required for the incorporation of the authority or the amendment of its certificate of incorporation, the issuance of any bonds, the execution of any mortgage, and deed of trust or trust indenture, or the exercise of any other of its powers by the authority. Neither a public hearing nor the consent of the State Department of Finance shall be a prerequisite to the issuance of bonds by the authority. The authority shall hold a public hearing before approving or obligating the expenditure of any tax revenues received by the authority from the city, any county, the state, or federal governments. Such notice shall be advertised in a newspaper of general circulation in Calhoun County, Alabama, and the notice shall be published not less than seven days prior to the hearing.