Unformatted text preview: MAC1147: Quiz #5
In the top-right corner of a clean sheet of paper, write your name, UFID, and section number. Please use a pen with blue or black ink. When you are nished, FOLD your paper in half lengthwise and write your name on the back. 1. Let f (x) = 2. Let f (x) =
√ x2 − 4. Find f (f (x)) and state its domain. x−1 . Use f −1 (x) to nd the range of f . x−4 3. The grade a student receives on an exam varies inversely with the number of hours per week spent on Facebook. If a student who spends 20 hours per week on Facebook earned a 40% on the exam, how many hours were spent on Facebook by a student who earned a 90%? 1 ...
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- Fall '08
- Writing, 40%, 90%, Pen