MATH107Quiz4 solution.docx - MATH 107 QUIZ 4 June-July,...

MATH 107 QUIZ 4 June-July, 2017 Instructor: S. Sands
NAME: _______________________________
I have completed this assignment myself, working independently and not consulting anyone
except the instructor.
INSTRUCTIONS
 The quiz is worth 100 points. There are 13 problems. This quiz is open book and open notes .
This means that you may refer to your textbook, notes, and online classroom materials, but
you must work independently and may not consult anyone (and confirm this with your
submission). You may take as much time as you wish, provided you turn in your quiz no later
than Sunday, July 2.
 Show work/explanation where indicated. Answers without any work may earn little, if
any, credit. You may type or write your work in your copy of the quiz, or if you prefer,
create a document containing your work. Scanned work is acceptable also. In your
document, be sure to include your name and the assertion of independence of work.
 General quiz tips and instructions for submitting work are posted in the Quizzes module.
 If you have any questions, please contact me by e-mail.
1. (4 pts) Solve the inequality 7 x  x 2 and write the solution set in interval notation.
(no explanation required) 1.
______
A. [7, 
B. [0, 7]
C. (–  , 7]  [0, 
D. (–  , 0]  [7, 
)
)
)
2. (4 pts) Solve
x − 6
x
2
+ 7 x − 8
 0 and write the solution set in interval notation. 2. ______
(no explanation required)
)
)
)
3. (4 pts) For f ( x ) = x 3 – x 2 – 8, use the Intermediate Value Theorem to determine which interval
must contain a zero of f . (no explanation required) 3. _______