Upon filing the application the governing body shall examine it and any amendments and supplements thereto, and within three months of its filing, or of the last amendment or supplement thereto, by resolution, determine whether the project set forth in the application is in the public interest and necessary for public use. If it determines that the undertaking and completion of the project is in the public interest and necessary for public use, it shall, by resolution, approve the application and authorize and empower the applicant to undertake and carry the project to completion in accordance with the provisions of this article.