What do project reports show during the Sprint review meeting?

Following chart lists stories for a release of an Agile project;

If the team completes Story A, Story B, and 50% of Story C for the first iteration, what is the team's velocity?

Which type of story would be used when an estimate is not available due to lack of knowledge of the technology required to implement the story?

Project managers use velocity to determine:

Which of the following drivers is the most important factor in determining the order in which stories will be developed?