Taxes, Privilege - As introduced, increases from 10 percent to 15 percent, the minimum number of qualified voters who voted in the last gubernatorial election that is required to file a petition calling for a referendum on the question of whether a privilege tax should be imposed on businesses making sales in a tourism development zone; requires the petition to be filed within 45 days, rather than 30 days, of final approval of an ordinance authorizing the privilege tax. - Amends TCA Title 67, Chapter 4, Part 30.