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1. 2. ANSWER Lesson 1.1, Real Numbers Evaluate: 3.

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Check Homework

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PRE Lesson 1.1-Tools of Algebra Objectives: To review the set of Real Numbers To review the properties of Algebra To understand interval and set notation.

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SETS & ELEMENTS A set is a collection of objects. - the objects are called the elements of theset. If S is a set, the notation of means that a is an element of S.

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means that b is not an element of S. Ex1. If Z represents the set of integers, then but

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If S and T are sets, then, represents their union. The union of sets consists of all elements in both sets. Ex 2. Find if

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The intersection of S and T is the set consisting of all elements that are in both sets. It is only what they have in common. Ex 3. Find if

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NOTATION OF SETS The set A that consists of positive integers less than 7 Braces { } Set-builder notation – “A is the set of all x such that x is an integer and “ Interval notation – Is a way to write the domain and the range. (0,7)

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b b

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Ex 4. Find,,,

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Classwork: Book: pg.11, even

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