Council may authorize the mayor to enter into contract for the purchase or provision of goods, services, real property, or personal property for the City under terms and conditions as authorized by Council. The Mayor shall approve all vouchers for the payment of the same.
   The Mayor shall also conduct all sales of real or personal property which the Council may authorize to be sold as having become unnecessary or unfit for the City's use.
   All purchases and sales shall conform to such regulations as the Council may from time to time prescribe. Where purchases or sales are  made on joint account of separate departments, the Mayor shall apportion the charge or credit to each department.(Amended 11-2-10)