In Smyrna, Georgia, the people elect a mayor, but the city council has most of the governing power. The mayor serves as the figurehead of the local government and ensures that all policies are executed, but the city council handles daily city operations. The council adopts city ordinances, develops the city budget, and is responsible for hiring and firing the heads of city departments. What type of government does Smyrna have?

a weak-mayor system
a strong-mayor system
a council-manager system
a special-purpose system