The bonds must be disposed of in such manner as the trustees determine, except that no sale, privately negotiated without public advertisement, may be made unless the approval of the State Fiscal Accountability Authority is obtained. If the trustees elect to sell the bonds at public sale, at least one advertisement of them must appear in some newspaper of general circulation in this State not less than seven days before the date fixed for the opening of bids. The bonds may be sold at such discount or for such premium as may be determined by the trustees or their designee as being in the best interest of the University.