This sheet includes answers to even numbered questions (bold). Answers to odd numbered are in textbook.
Ch 1
1.1 page 7: 5
1.2 page 15: 5
1.5 page 39: 5, 7, 9, 11, 13.
Rev. page 48: 7a, 8, 9, 11, 13, 21
Answer to p.48, Question 8: Yes. all successive slopes are equal.
Ch 2
2.2 page 70: 21
2.3 page 74: 2, 4, 7.
2.5 page 83: 2, 4, 6, 15
Rev. page 90: 13, 15
Answers to p.74, Question 2: Click for graph. Question 4: Click for graph. p.83, Question 2: .043, .073, .090, Concave up. Question 4: -10, -4, -3, -2. Concave up. Question 6: Concave down.
Ch 3
3.1 page 108: 10, 14, 16, 25
3.3 page 122: 17, 28, 29. Question 28 was also on HW#51.
Rev. page 132: 5, 12, 13, 14, 21
Answers to p.108,
Question 10: 495. Question 14: 411.8. Question
16: (a) growing = i, ii, iv. shrinking = iii, v, vi. (b) growing
fastest = iv, 18.5%/year. (c) shrinking fastest = v, 22%/year. (d) largest
initial = iii, 2500; smallest initial = ii, 600.
Answers to p.122,
Question 28: Domain: all x. Range: y<8. x−int.
(3, 0). y−int. (0, 7). H. Asy. y=8.
Make Table. Graph.
Answers to p.132, Question 12: Not linear because successive slopes increase, 25, 30, 36. Can be exponential since successive ratios are 1.2. 150/125=1.2, 180/150=1.2, 216/180=1.2. A possible formula is 125(1.2)x. Question 14: Not linear. Slopes decrease. Ratios are all 0.5 so a possible formula is a half-life formula 256(0.5)x.
Ch 4
4.1 page 149: 35
4.3 page 165: 2, 3, 5, 7, 9, 11. Question 9 was also on HW#53.
Rev. page 177: 7, 9, 17
Answer to p.165, Question 2: (A) 3x, because it grows the fastest with the largest base=3, (B) 2x, (C) ln(x), (D) log(x), because it is base 10, larger than e, (E) e-x, because it has a negative exponent.
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