# Project #6805 - Algebra

INSTRUCTIONS

·         The quiz is worth 100 points. There are 12 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, May 26.

·         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 conference.

1. (4 pts) Which of the following represents the distance between –3.2 and – 8.9 on the number line? Indicate your choice and show work by calculating the numerical value.                                               1. _______

A.     | 3.2|  +  | 8.9|

B.     | – 3.2  + 8.9 |

C.     | – 3.2  – 8.9 |

D.     | 3.2|    | 8.9|

2. (3 pts) Write the interval notation corresponding to the set notation {x | x  ≥  – 3}.

3. (6 pts) Consider the interval (– ¥, 0]. For each numerical value below, is it in the interval or not?

6.2 ´10–2   ________                 3–1          ________                             ________

(Yes or No)                                     (Yes or No)                                               (Yes or No)

92                   ________            | –7.5 |     ________                     –8.4  ´ 105   ________

(Yes or No)                                      (Yes or No)                                               (Yes or No)

4. (8 pts) Simplify  (see attachment)

5. (8 pts) Simplify (see attachment)

6. (8 pts) Compute  (see attachment) . Show some work. Write the answer using scientific notation.

7. (18 pts)  Factor. (Work not required to be shown).

(a)     3x2 – 7x – 20

(b)     49x2 – 25

(c)     8x3  +  1

8. (12 pts) Perform the indicated operations and simplify: (5x  +  1)(4x – 3) – (2x – 7)2 . Show work.

9. (8 pts) Solve the equation   4(x – 2) = 6 – 9(2 – x). Show work.

10. (8 pts) Solve the equation     x(x – 6) = 7.  Show work.

11.  (9 pts) Simplify: (see attachment)   . Show work.

12. (8 pts) Simplify: (see attachment) . Show work. Give the exact answer (including a radical).

 Subject Mathematics Due By (Pacific Time) 05/26/2013 09:30 pm
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