The commission may, as part of the same ballot proposition to approve the imposition of a retail transactions and use tax, seek authorization to issue bonds payable solely from the proceeds of the retail transactions and use tax. The maximum bonded indebtedness which may be authorized shall be an amount equal to the sum of the principal and interest on the bonds not to exceed the estimated proceeds of the retail transactions and use tax for a period of 30 years. The actual wording of the proposition on any short form of ballot card, label, or other device, regardless of the system of voting used, shall read as follows: