If you were making a recommendation to the mayor of Providence concerning proposed new street-sweeping routes, designed using the theory of this chapter, would you recommend that the changes be adopted or not? List a few pros and cons. Does a grid of two-way streets always have a Eulerian solution? What effect would one way streets have on the problem of street sweeping? What effect would multiple sweeper trucks used have on the problem? Suppose that each night, one sweeper followed a Eulerian circuit on the street grid. Would there always be an Eulerian circuit left to sweep every night until all the sweeping is done? If you were making a recommendation to the mayor of Providence concerning proposed new street-sweeping routes, designed using the theory of this chapter, would you recommend that the changes be adopted or not? List a few pros and cons. Does a grid of two-way streets always have a Eulerian solution? What effect would one way streets have on the problem of street sweeping? What effect would multiple sweeper trucks used have on the problem? Suppose that each night, one sweeper followed a Eulerian circuit on the street grid. Would there always be an Eulerian circuit left to sweep every night until all the sweeping is done