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Holt CA Course 2 1-1 Evaluating Algebraic Expressions Preview 1-1: Evaluating Algebraic ExpressionsEvaluating Algebraic Expressions 1-2: Writing Algebraic.

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Presentation on theme: "Holt CA Course 2 1-1 Evaluating Algebraic Expressions Preview 1-1: Evaluating Algebraic ExpressionsEvaluating Algebraic Expressions 1-2: Writing Algebraic."— Presentation transcript:

1 Holt CA Course 2 1-1 Evaluating Algebraic Expressions Preview 1-1: Evaluating Algebraic ExpressionsEvaluating Algebraic Expressions 1-2: Writing Algebraic ExpressionsWriting Algebraic Expressions 1-3: Integers and Absolute ValueIntegers and Absolute Value 1-4: Adding IntegersAdding Integers 1-5: Subtracting IntegersSubtracting Integers 1-6: Multiplying and Dividing IntegersMultiplying and Dividing Integers 1-7: Solving Equations by Adding or SubtractingSolving Equations by Adding or Subtracting 1-8: Solving Equations by Multiplying or DividingSolving Equations by Multiplying or Dividing 1-9: Solving Two-Step EquationsSolving Two-Step Equations Lesson Quizzes

2 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-1 Evaluating Algebraic Expressions Lesson Quiz Evaluate each expression for the given value(s) of the variables. 1. 6x + 9 for x = 3 2. x + 14 for x = 8 3. 4x + 3y for x = 2, y = 3 4. y(27 – x) for x = 19, y = 6 5. If n is the amount of money in a savings account, then the expression n + 0.03n can be used to find the amount in the account after it has earned interest for one year. Find the total in the account after one year if $500 is the initial amount. 27 22 17 48 $515

3 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-2 Writing Algebraic Expressions Lesson Quiz Write an algebraic expression for each word phrase. 1. 5 less than a number k 2. a number x divided by 11 3. 4 times the sum of n and 5 Write an algebraic expression to evaluate the word problem. 4. Karen buys n raffle tickets for $0.50 each. If she buys 13 of them, how much will they cost? k – 5 4(n + 5) 0.50n; $6.50 x 11

4 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-3 Integers and Absolute Value Lesson Quiz 1. At the end of the course, your golf score was –2. Your friend’s score was 7. Use, or = to compare your scores. Write the integers in order from least to greatest. 2. –17, –26, 23 3. 0, 5, –4 Simplify each expression. 4. |–4| + |–2| 5. |6 + 13| – |7 – 5| –2 < 7 –26, – 17, 23 –4, 0, 5 6 17

5 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-4 Adding Integers Lesson Quiz Add. 1. –7 + (–7) 2. 15 + (–9) + (–2) 4–14 Evaluate each expression for the given value of the variable. 3. 13 + r for r = –154. 2 + b + (–9) for b = –6 –2–13 5. On Monday, a local dog shelter had six dogs. By Friday, they had found homes for three, but took in two more. Then how many dogs were in the shelter? 5 dogs

6 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-5 Subtracting Integers Lesson Quiz Subtract. 1. –6 – (–4) –2 –6 9 2. –3 – 33. 4 – (–5) Evaluate each expression for the given value of the variable. 4. 9 – s for s = –5 14 5. –4 – w + 5 for w = 21–20 6. Suretta is flying in an airplane and rises an additional 20 feet. Then she descends 190 feet toward the ground. How far below her original height did Suretta go? 170 feet

7 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-6 Multiplying and Dividing Integers Lesson Quiz Multiply or divide. 1. –8(4)2. –32 6 –12(5) –10 Simplify. 3. –2(13 – 4) 4. 6(–5 – 3)–18–48 5. Evin completes 11 transactions in his bank account. In 6 transactions, he withdraws $10. In 5 transactions, he deposits $20. Find the total net change in dollars. $40

8 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-7 Solving Equations by Adding or Subtracting Lesson Quiz Determine which value of x is a solution of each equation. 1. x + 9 = 17; x = 6, 8, or 26 2. x – 3 = 18; x = 15, 18, or 21 Solve. 3. a + 4 = 22 4. n – 6 = 39 5. The price of your favorite cereal is now $4.25. In prior weeks the price was $3.69. Write and solve an equation to find n, the increase in the price of the cereal. 8 21 a = 18 n = 45 3.69 + n = 4.25; $0.56

9 Holt CA Course 2 1-1 Evaluating Algebraic Expressions Lesson Quiz Solve. 1. 3t = 9 2. –15 = 3b 3. = –74. z ÷ 4 = 22 5. A roller coaster descends a hill at a rate of 80 feet per second. The bottom of the hill is 400 feet from the top. How long will it take the coaster rides to reach the bottom? t = 3 z = 88 5 seconds b = –5 x = 28 x –4 6. A lot must be cleared so that a new building can be constructed. A crew of 7 workers is assigned to the task and each person works the same number of hours. It takes 525 person-hours to complete the job. How many hours does each person work? 75 hr 1-8 Solving Equations by Multiplying or Dividing

10 Holt CA Course 2 1-1 Evaluating Algebraic Expressions 1-9 Solving Two-Step Equations Lesson Quiz Translate the sentence into an equation. 1. The product of –3 and a number c, plus 14, is –7. Solve. 2. 17 = 2x – 33. –4m + 3 = 15 4. – 5 = 15. 2 = 3 – –3c + 14 = –7 12 4 10 –3 w 2 x 4 6. A discount movie pass costs $14. With the pass, movie tickets cost $6 each. Fern spent a total of $68 on the pass and movie tickets. How many movies did he see? 9


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