To assure local control and close on-going deficits, shall the City of Hayward be authorized to enact a general tax ordinance not exceeding 15% of gross sales for all products associated with medical or adult use of cannabis, from cultivation, distribution, manufacturing, and retailing of cannabis or products derived therefrom, if the City of Hayward permits cannabis business activities, such tax to be in addition to any other taxes imposed by the City of Hayward or the State of California?