It looks like you attached the picture from another thread (where a picture wasn't really needed, as the typed version is identical).
When you provide a picture of this problem, please also answer my questions about the course, chapter, and context -- I want to see what is being taught, not just the question itself.
Since it is apparent that you are using a computer (is the course online, or with no physical textbook?), I might want to see an example or help that is provided with this problem.