jorfeo_math2000920quiz203.docx

Math 009

Quiz 3 Page 4

Math 009 Quiz 3

Professor: Jillian Orfeo

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 allows 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 should show all of your work to receive full credit. If you do not show work, you may earn only partial or no credit.

· 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 Quizzes Module.

· If you have any questions, please contact me by e-mail ([email protected]).

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 on every problem. Read the basic rules for showing work posted in our LEO classroom BEFORE you start working on the quiz.

Instructions for #1 - #5:

Solve each equation following the methods discussed in Section 9.3 of our text. If there are fractions or decimals in the equation, clear them first. If the equation has a unique solution, show the complete check of your answer.

1)

2)

Instructions for #1 - #5:

Solve each equation following the methods discussed in Section 9.3 of our text. If there are fractions or decimals in the equation, clear them first. If the equation has a unique solution, show the complete check of your answer.

3)

4)

5)

6) Simplify the following expression:

7) Simplify the following expression:

8) Given the set list the numbers in this set that belong to the set of:

a) Natural numbers.

b) Integers.

c) Rational numbers.

d) Irrational numbers.

e) Real numbers.

9) The new iPhone 6 Plus has a perimeter of 471.8 millimeters. The height of the new phone is 2.5 millimeters more than twice its width. Find the dimensions of the new phone. Please set up and solve this problem following the steps below:

a) Define the unknown quantities in terms of one variable.

b) Translate the question into an equation.

c) Solve the equation, showing all work.

d) Write a complete answer to the question asked, including appropriate units.

.

10) Christine and Peter earn a combined annual income of $190,500. If Christine earns $30,500 per year more than Peter, what are their individual annual salaries? Please set up and solve this problem following the steps below:

a) Define the unknown quantities in terms of one variable.

b) Translate the question into an equation.

c) Solve the equation, showing all work.

d) Write a complete answer to the question asked, including appropriate units.

End of quiz: please do not forget to write and sign (or type) the required statement explained in the box on Page 1 of the quiz.

(

)

(

)

3242532

xx

--=-+

1.512.21.22

xx

-=-

(

)

32111

xx

-+=-

(

)

53

23

4

y

y

-

=+

(

)

3724

xxx

-=+-

(

)

1

129

3

xy

--

(

)

(

)

42165

xx

---

21

5,3.4,,0,1,,2,7

32

p

ìü

íý

îþ

---