Hi what does the prefix un mean

The tone of a story is the author's attitude toward the subject. provide two examples that support the conclusion that the tone of this story is ironic.

What is rand's reason for including the ra.pe scene?   how does the event change both roark and dominique?   discuss how current attitudes on relations between the se.xes have changed since the publication of the fountainhead.

What is the the story about in the movie freedom writers be very detailed.