Instructor: Staci Gash
Instructions: This quiz covers through week 1. You may either type your answers and submit as a word doc or use pencil and paper and scan your work and submit. In either case, post your solutions to the assignment folder in classroom. It is best to show your work so that you can receive partial credit. If the answer is incorrect and there is no work to back up the answer then the answer will receive zero points. By showing you understand the process you will receive some credit even for an incorrect answer.
1. Consider the interval [0, ¥). For each numerical value below, is it in the interval or not?
(Just answer Yes or No)
2.5 ´ 10- 6 ________ 4-1________ -42________
(Yes or No) (Yes or No) (Yes or No)
(0/8)________ | -1.6 | ________ -5.2 ´103 ________
(Yes or No) (Yes or No) (Yes or No)
2. Write the interval notation corresponding to the set notation {x| x ≤ -9}
3. Simplify (-7a-3b5)3 (a2b9)2. Show work.
4. Compute (2.9 x 105) / (4.2 x 10-3). Show some work. Write the answer using scientific notation.
5. Factor. (Work not required to be shown).
21x2 + 8x- 5
6. Perform the indicated operations and simplify: (3x - 2)(6x - 3) - (2x - 4)2 . Show work.
7. Solve the equation x(x - 6) = -9. Show work.
8. Solve the equation 7(x - 1) = 9 - 2(6 - x). Show work.
9. Simplify: {2 / (1 - x2)} - {1 / (1 - x)} .Show work.
10. Simplify: √50 - √32 + 6√2 . Show work. Give the exact answer (including a radical).