The county legislative authority may provide an adequate annual budget and funds for operation and needs of the board of equalization, including, but not limited to the costs and expenses of the board, such as the meeting place, the necessary equipment and facilities, materials, the salaries of the clerk of the board and the clerk's assistants, the expenses of the members of the board during the sessions, travel, in-service training, and payment of salaries of all such employees hired by the board, to facilitate its work.