Persons acting on behalf of the city and authorized in writing by the city may examine the books, papers, and records of any operator in order to verify the accuracy of any return made; or if no return was made, to ascertain the tax as provided in this chapter. Every such operator is directed and required to give to the city the means, facilities, and opportunity during regular city business hours for such examinations and investigations as are hereby authorized. (Ord. 63, 5-2-1995)