MHR • Advanced Functions 12 Solutions 660

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Chapter 7 Practice Test Chapter 7 Practice Test Question 1 Page 410 The correct solution is C. ( 2 ) 1 3 3 2 = 2 2 Chapter 7 Practice Test Question 2 Page 410 The correct solution is A. 2 x+1 = ( 2 ) 2 x 2 x+1 = 2 2x x +1 = 2x x = 1 Chapter 7 Practice Test Question 3 Page 410 The correct solution is D. The sum of the logarithms equals the logarithm of the product. Chapter 7 Practice Test Question 4 Page 410 The correct solution is C. " 5!10% log 2 # $ 25 & ' = log 2 2 = 1 Chapter 7 Practice Test Question 5 Page 410 " % $ 6 ! 4' " log 3 $ ' = log $ 8 3 24 ! 3 % ' # $ 8& ' # 3 & = log 3 9 = 2 MHR • Advanced Functions 12 Solutions 743
Chapter 7 Practice Test Question 6 Page 410 a) ( 2 ) 3 x+2 = ( 2 ) 2 2x!1 2 3x+6 = 2 4x!2 3x + 6 = 4x ! 2 4x ! 3x = 6 + 2 x = 8 b) 3 x = ( 3 ) 4 x!4 3 x = 3 4x!16 x = 4x !16 4x ! x = 16 3x = 16 x = 16 3 c) 1 = log(x + 5) ! log 2 " log10 = log x + 5 % # $ 2 & ' 10 = x + 5 2 20 = x + 5 x = 15 d) log8 ! log(x ! 2) = 1 " 8 % log # $ x ! 2& ' = log10 8 x ! 2 = 10 8 = 10x ! 20 10x = 28 x = 2.8 Chapter 7 Practice Test Question 7 Page 410 a) MHR • Advanced Functions 12 Solutions 744
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Chapter 7 Tools and Strategies for
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c) x 2 + x !1 = 0 x = !1± 12 ! 4(1
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Chapter 7 Prerequisite Skills Quest
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Chapter 7 Section 1 Question 4 Page
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) c) d) Chapter 7 Section 1 Questio
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Chapter 7 Section 1 Question 10 Pag
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Page 15 and 16:
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Chapter 7 Section 2 Techniques for
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c) Answers may vary. A sample solut
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Chapter 7 Section 2 Question 8 Page
Page 23 and 24:
Page 25 and 26:
f) 4 x ! 3!18(4 ! x ) = 0 (4 x ) 2
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d) e) There is no zero so there is
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Page 33 and 34: Chapter 7 Section 2 Question 21 Pag
Page 35 and 36: Chapter 7 Section 3 Question 5 Page
Page 37 and 38: d) 2log w + 3log w + 1 2 log ! 1 $
Page 43 and 44: ) Let x = log b m and y = log b n b
Page 47 and 48: Chapter 7 Section 4 Techniques for
Page 51 and 52: Check: d) 1 = log( y + 9) ! log y "
Page 53 and 54: ! f) log p + 5 $ " # p +1% & = 3 p
Page 65 and 66: ) i) y &= 4.21x - 3.07 ii) y &= 0.8
Page 75 and 76: Chapter 7 Review Chapter 7 Review Q
Page 77 and 78: ! b) 0.05 = 1 $ " # 2% & t 5 log0.0
Page 79 and 80: Chapter 7 Review Question 7 Page 40
Page 81 and 82: Chapter 7 Review Question 13 Page 4
Page 83: d) i) A = 500(1.033) 2t + 500(0.01)
Page 87 and 88: d) Chapter 7 Practice Test Question
Page 89 and 90: Chapter 7 Practice Test Question 10
Page 91: e) i) y &= 95.67(0.96) 15 y &= 49.6
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MHR • Advanced Functions 12 Solutions 660

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