For the privilege of selling tangible personal property at retail, a tax is hereby imposed upon all retailers in the incorporated territory of the city at the rate of up to three quarters of a cent per dollar (0.75%) of the gross receipts of any retailer from the sale of all tangible personal property sold at retail in said territory on and after the operative date of Ordinance 2020-11-1515. If this rate of tax is approved by the voters, the City Council may by resolution set the rate of tax at such amount it deems appropriate not exceeding the rate of tax established herein. (Ord. 2020-11-1515 § 1 (part))