Elasticity topic in economics

Preparation for W3 due July 26 A city has built a bridge over a river and it decides to charge atoll to everyone who crosses. For one year, the city charges a variety of different tolls and records information on how many drivers cross the bridge. The city thus gathers information about the elasticity of demand. If the city wishes to raise as much revenue as possible from the tolls, where will the city decide to charge atoll: in the ineiastic portion of the demand curve, the elastic portion of the demand curve. orthe unit elastic portion? Explain