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math012quiz4.docx
Math 012
Quiz 4 Page 2
Math 012 Quiz 4
Professor:
Name________________________________
Instructions:
· The quiz is worth 50 points. There are 10 problems, 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, but you may not consult anyone.
· 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. Review instructions for submitting your quiz in the Unit Quizzes Module.
· If you have any questions, please contact me by e-mail
At the end of your quiz you must include the following dated statement with your name typed in lieu of a signature. Without this signed statement you will receive a zero.
I have completed this quiz myself, working independently and not consulting anyone except the instructor. I have neither given nor received help on this quiz.
Name: Date:
Please remember to show all of your work.
1) Find the domain of the function and write it in set notation:
2) Perform the indicated operations and simplify your answer:
3) Perform the indicated operation and simplify your answer:
4) Perform the indicated operation and simplify your answer:
5) Perform the indicated operation and simplify your answer:
6) Solve the equation and show the check of your solution(s). Use the method discussed in Section 6.5 of our text, clearing fractions from the equation first.
7) Solve the equation and show the check of your solution(s). Use the method discussed in Section 6.5 of our text, clearing fractions from the equation first.
8) When Linda and Martin work together painting one room, they can complete the work in 5 hours. When Linda works alone, it takes her 7 hours to paint the same room. How long would it take Martin to paint the room alone?
9) A car travels 280 miles in the same time that a motorcycle travels 240 miles. If the car’s speed is 10 miles per hour more than the motorcycle’s, find the speed of the car and the speed of the motorcycle.
10) The weight of an object on or above the surface of Earth varies inversely as the square of the distance between the object and Earth’s center. If a person weighs 132 pounds on Earth’s surface, find the person’s weight 900 miles above the surface of the Earth. Assume that the radius of the Earth is 4000 miles. Round your answer to the nearest whole pound.
End of quiz: please remember to sign and date the statement in the box on the first page of the quiz.
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