07 Jan 9) Solve the equation by the

Quiz 3 Math 012 Quiz 3

Professor: Dr. John Uccellini

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 or any other online resources.

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 ([email protected]).

Please remember to show all of your work.

Name________________________________

1. Answer each of the questions below: (1 pt. each)

a) Write the number in scientific notation: 360,559,112

b) Write the number in scientific notation: 0.00000631

c) Write the number in standard notation, without exponents:

d) Write the number in standard notation, without exponents:

e) Simplify:

2) Simplify. Write the answer using positive exponents only. (5 pts)

(2x^3 y^(-2) z)(5x^4 y^2 z^7 )

3) Simplify. Write the answer using positive exponents only. (5 pts)

4) Simplify. Write the answer using positive exponents only. (5 pts)

5) Perform the indicated operations and simplify: (5 pts)

6) Perform the indicated operations and simplify: (5pts)

(6x-4y^2 )(6x+4y^2 )

7) Perform the indicated operations and simplify: (5 pts)

8) Factor completely. Show work following the method discussed in Sections 6.1 and 6.3 of our text, and show the check by re-multiplication of the factors. If the polynomial is not factorable, write “prime.” (5 pts)

9) Solve the equation by the method of factoring. Use the factoring technique discussed in Section 6.4 of our text, and solve following the methods discussed in Section 6.7. (5 pts)

2x^2+9x-5=0

10) Solve the equation by the method of factoring. Use the factoring technique discussed in Section 6.4 of our text, and solve following the methods discussed in Section 6.7. (5 pts)

30x^2=3x+9

Bonus: Perform the indicated operations and simplify. Show work to support your answer. (5 pts)

End of quiz: please remember to sign and date the statement in the box on the first page of the quiz.