For the purpose of providing funds to finance the projects described and authorized by the legislature in the capital and operating appropriations acts for the 2007-2009 and 2009-2011 fiscal bienniums, and all costs incidental thereto, the state finance committee is authorized to issue general obligation bonds of the state of Washington in the sum of two billion two hundred nineteen million dollars, or as much thereof as may be required, to finance these projects and all costs incidental thereto. Bonds authorized in this section may be sold at such price as the state finance committee shall determine. No bonds authorized in this section may be offered for sale without prior legislative appropriation of the net proceeds of the sale of the bonds.