MHR • Advanced Functions 12 Solutions 660

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e) log " #(k + 2)(k !1) $ % = 1 Check: k 2 + k ! 2 = 10 1 k 2 + k !12 = 0 (k + 4)(k ! 3) = 0 k = 3 k = !4 is an extraneous root since both log(k + 2) and log(k !1) are undefined for this value. MHR • Advanced Functions 12 Solutions 711
! f) log p + 5 $ " # p +1% & = 3 p + 5 p +1 = 103 p + 5 = 1000 p +1000 1000 p ' p = 5'1000 Check: 999 p = '995 p = ' 995 999 Chapter 7 Section 4 Question 4 Page 391 Graph both sides of the equation and find the points of intersection. MHR • Advanced Functions 12 Solutions 712
Page 1 and 2: Chapter 7 Tools and Strategies for
Page 3 and 4: c) x 2 + x !1 = 0 x = !1± 12 ! 4(1
Page 5 and 6: Chapter 7 Prerequisite Skills Quest
Page 7 and 8: Chapter 7 Section 1 Question 4 Page
Page 9 and 10: ) c) d) Chapter 7 Section 1 Questio
Page 11 and 12: Chapter 7 Section 1 Question 10 Pag
Page 17 and 18: Chapter 7 Section 2 Techniques for
Page 19 and 20: c) Answers may vary. A sample solut
Page 25 and 26: f) 4 x ! 3!18(4 ! x ) = 0 (4 x ) 2
Page 27 and 28: d) e) There is no zero so there is
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: Check: d) 1 = log( y + 9) ! log y "
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 and 84: d) i) A = 500(1.033) 2t + 500(0.01)
Page 85 and 86: Chapter 7 Practice Test Question 6
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

MHR • Advanced Functions 12 Solutions 660

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