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WRAP UP To ensure mastery of objectives, students should be able to: • Write the appropriate recursive or explicit formula for a given sequence. • Use an explicit or recursive formula to determine the terms in a sequence. Reteaching 9.1 (CRB) Extra Practice 9.1 (CRB) Assignment In-class practice: 1–5 Homework: 6–38 Math Applications Exercises 3, 6, 7, and 15 from pages 422–429 9.1 Patterns 395
Answers to Math Applications Math Applications for this chapter are on pages 422–429. The notes and solutions shown below accompany the suggested applications to assign with this lesson. 3. a. 125 + 0.4x b. 125 + 0.4(300) = 125 + 120 = 245 c. 25 + 0.6x d. 25 + 0.6(200) = 25 + 120 = 145 6. a. a 2 = $750,000(1.1) = $825,000 b. a 3 = $825,000(1.1) = $907,500 $905,000 < $907,500, so Mari did not earn a bonus. c. a 5 = $750,000(1.1) 5–1 = $750,000(1.4641) = 1,098,075 d. yes; a 2 would now equal $900,000 instead of $825,000 and would increase each subsequent number. e. a n = 1.1(a n–1 ) 7. a. For each 1 cent change in earnings per share, the closing share price changes 0.68. The expression is 0.68x. b. 0.68(9) = $6.12 15. a. Each term is the product of the previous two terms, so a n = a n–2 • a n–1 b. 0.3 = 0.5(a n–2 ) 0.6 = a n–2 1 24 1 16 1 36 1 40 2 de 3 7 f 396 Chapter 9 Sequences and Series
Page 1 and 2: LESSON OBJECTIVES 9.1 Patterns •
Page 3 and 4: LESSON PLANNING Vocabulary sequence
Page 5: INSTRUCTION Example 2 Return to the
Page 9 and 10: INSTRUCTION Tell students that the
Page 11 and 12: INSTRUCTION Ongoing Assessment Show
Page 13 and 14: Answers to Math Applications Math A
Page 15 and 16: INSTRUCTION Tell students that the
Page 17 and 18: Problem Solving Before solving this
Page 19 and 20: Answers to Math Applications Math A
Page 21 and 22: INSTRUCTION Students might incorrec
Page 23 and 24: WRAP UP To ensure mastery of object
Page 25 and 26: Mixed Review Additional Answers 35.
Page 27 and 28: INSTRUCTION Ask students to express
Page 29 and 30: WRAP UP To ensure mastery of object
Page 31 and 32: MATH LAB Activity 1 PREPARE • An
Page 33 and 34: Math Applications Solutions and Not
Page 41 and 42: Vocabulary Review arithmetic mean (
Page 43 and 44: 1 2 10 , 922 1 2 ∞ 1 ∑

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