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Algebra8

Algebra8 - MAT 112 Final Exam Spring 2006 M ay 8 2006 10:15...

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MAT 112 Final Exam Spring 2006 May 8, 2006 10:15 a.m. - 12:15 p.m. Instructions: Do not open this booklet until you are told to do so. Show all work required to solve the problems. Incorrect answers not supported by work will receive no partial credit. You may use a calculator on any part of the exam, but you may not share a calculator with another student. If you have any questions, ask one of the proctors. Printed name: Signature: Instructor's Name (circle one): Smith Part: Points: I II III TOTAL

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PART I 1. a. (3 points) State the commutative property for addition on the set of integers and illustrate with an example. b. (2 points) Give one example to show that division is not commutative on the set of real numbers. c. (3 points) Simplify the following algebraic expression 3x + 5y - 2(4x - 2y). Be sure to write out each step and the algebraic properties you use. d. (3 points) Simplify 1 _2 2 - (_5)3 - (-7)1 2. Consider the linear function given by the following table: x y = f(x) - 5 1 0 3 1 1 2 -1 3 -3 a. (2 points) Find f(2).
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