If a tentative agreement is reached by the authorized representatives of the public agency and a recognized employee organization or recognized employee organizations, the governing body shall vote to accept or reject the tentative agreement within 30 days of the date it is first considered at a duly noticed public meeting. A decision by the governing body to reject the tentative agreement shall not bar the filing of a charge of unfair practice for failure to meet and confer in good faith. If the governing body adopts the tentative agreement, the parties shall jointly prepare a written memorandum of understanding.