Week 4 Math Quiz
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math_012_q4.docxMath 012 Quiz 4
Name________________________________
Instructions:
· The quiz is worth 75 points. There are 15 problems/answers, each worth 5 points. Your score on the quiz will be converted to a percentage and posted in your assignment folder with comments.
· This quiz is open book and open notes, and you may take as long as you like on it provided that you submit the quiz no later than the due date posted in our course schedule of the syllabus. You may refer to your textbook, notes, and online classroom materials.
· You must show all of your work to receive full credit. If a problem does not seem to require work, write a sentence or two to justify your answer.
· Please type your work in your copy of the quiz, or if you prefer, create a document containing your work. Scanned work is also acceptable. Be sure to include your name in the document.
Please remember to show ALL of your work on every problem.
1. Find all numbers for which the rational expression is not defined.
__3__
(2y + 5)
Answer:
__x2 + 11__
x2 – 3x -28
Answer:
2. Simplify:
__a2 – 9__
a2 + 5a + 6
Answer:
Multiple and Simplify
____4a2_____ . 3a - 6
3a2 – 12a +12 2a
Answer:
3. Find the LCM 2x2, 6xy, 18y2
Answer:
Find the LCM 2 + 3x, 4 – 9x2, 2 – 3x
Answer:
4. Add and simplify if possible.
_5_ + _7_
6r 8r
Answer:
_ 6__ + 4x _
x – y y2 – x2
Answer:
5. Subtract and simplify if possible.
4z – 9 - 3z – 8
3z 4z
Answer:
4 – x - 3x – 8
x – 9 9 – x
Answer:
6. Solve
1/x = 2/3 – 5/6
Answer:
t + 2 - t – 2 = 1
5 4
Answer:
7. Write the formula for each word problem.
The speed of one bicyclist is 2km/hr faster than another bicyclist. The first bicyclist travels 60 km in the same amount of time that it takes the second to travel 50 km. Find the speed of each bicyclist.
Answer:
8. Mary has $36 budgeted for office stationary. Engraved stationary costs $20 for the first 25 sheets and $0.08 for each additional sheet. How many engraved sheets can Mary order and still stay within her budget?
Answer:
9. A swimming pool can be filled in 5 hours by hose A alone and 6 hours by hose B alone. How long would it take to fill the pool using both hoses?
Answer:
