**INSTRUCTIONS**

· The quiz is worth 100 points. There are 12 problems. This quiz is ** open book** and

· **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.

· If you have any questions, please contact me by e-mail or phone (540-338-7120).

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?

(Just answer Yes or No)

6.2 ´10^{–2} ________ 3^{–1} ________ ________

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

–9^{2 } ________ | –7.5 | ________ –8.4 ´ 10^{5 } ________

(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) 3*x*^{2} – 7*x* – 20

(b) 49*x*^{2} – 25

(c) 8*x*^{3} + 1

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