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TRANSCRIPT
Chapter 1 Questions Answers
1. 6π
2. π‘ β 12
3. 9
4. 504
5. [40(3 + 11 + 4)]
60, 12 βππ’ππ
6.
7.
8. a. $325
b. $357
9.
10.
11.
12. {4}
13. {2}
14.
15.
16.
17.
18.
19.
Chapter 2 Questions Answers
1. π = 60π
2. π = 8π
3. 35π = 1400; 40
4. 2.5
5. β
7
6
6. π₯ + (π₯ + 2) + (π₯ + 4) = 78; 24, 26, 28
7. 1
2π₯ + 8 = β2; β20
8. 0.5
9. 3
14
10. $15
11. 29
17
12. 2
25
13. 4
14. 4.5
15. 18
16. |π₯ β 3| = 5
17. |π₯ + 2| = 7
18. 3.19
19. 35.25
20. 54
21. 35 inches
22. $460
23. $70.40
24. 44.39 lb
25.
26.
27.
28. 2.86 kg
29. 8.8 ππ‘2/πππ
30. 8.125 mL
Chapter 3 Questions Answers
1. No
2. Yes; 6π₯ β π¦ = β14
3.
4.
5. 3.5
6. No solution
7.
8.
9.
10. a. 2.5 mph
b. Yes, between 8 β 10 AM
11. Constant of Variation: 1/3, Slope: 1/3
12. Constant of Variation: -4, Slope: -4
13. π¦ = β
2
3π₯; 2
14. π¦ = 7π₯; 0
15. No, there is no common difference
16. Yes, the common difference is 3.
17.
18.
19.
b. π¦ = 8π₯
c. 88 papers
20. π(π₯) =
1
3π₯ β 1
21. π(π₯) = β2π₯ + 1
Chapter 4 Questions Answers
1. π¦ = 6π₯ β 4
2. π¦ =
1
3π₯ + 3
3. π¦ = 2π₯ β 1
4. π¦ = π₯
5. a. πΆ = 4π b. $80
6. π¦ =
1
4π₯ β
1
2
7. π¦ =
2
5π₯
8. 12π₯ β π¦ = 2
9. 2π₯ β 7π¦ = β18
10. π¦ =
1
4π₯ +
19
4
11. π¦ = 3π₯ β
1
4
12. Perpendicular
13. Perpendicular
14. Austin and Travis will receive curbs first because they are parallel
Chapter 5 Questions Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13. 36 + 0.5π₯ β€ 38; π₯ β€ 4; πππ πππ ππ’π¦ 4 π‘πππππππ
14.
15.
16. a. {π₯|16 < π₯ < 32}
17.
18.
19. a. $14 β€ π β€ $17
b. $16.75 β€ π β€ $21.25
20.
21.
22.
23.
24. a. 20π₯ + 30π¦ > 975
Chapter 6 Questions Answers
1. Consistent and independent
2. Inconsistent
3.
4. (-1, 4)
5. No solution
6. (β
7
33,17
33)
7. Infinitely many solutions
8. Apple, $0.30; Orange, $0.50
9. (β12,
40
3)
10. (0, 2)
11. 4 and 10
12. (2, 1)
13. (β
2
3, β
4
3)
14. Ride, 3 tickets; game, 1 ticket
15. Lawns, 3; dogs, 6
16. Elimination by Addition, (β4, 14)
17. Substitution, (2, 5)
18. π. 10π₯ + 4π¦ = 52, 15π₯ + 2.5π¦ = 67.5 b. 4 hours, 3 children
19.
20.
Chapter 7 Questions Answers
1. 16π₯5π¦9π§
2. 18π3π2π3π4
3. 5π6π5π5
4. 15
2π₯3π¦4π§5
5. 3π2
5πππ5
6. π₯3
8π¦5
7. 2π5
7π3π5π7
8. 5π₯7
6π¦7π§7
9. β133
10. β7π
11. (17π)
12
12. 3(2π₯π¦π§2)
12
13. 3
5
14. 0.1
15. 16
16. 625
2401
17. β
1
4
18. 1
3
19. 2.21 Γ 1010
20. 3.088 Γ 10β9
21.
22.
23.
24.
25.
26. 3648 residents
27. $4907.71
28. 248 players
29.
30.
31. Do Not Answer
32. Do Not Answer
33. Do Not Answer
34. Do Not Answer
35. Do Not Answer
36. Do Not Answer
Chapter 8 Questions Answers
1. 9π3 + 2π2 + 4π β 12
2. 2β2 β 16
3. 3
2π5π4 β
5
2π4π5 β 4π4π2
4. β18π3 β 2π2π2 β 4ππ2
5. -2
6. -5
7. β15π‘2 β 86π‘ β 32
8. 2π2 +
65
4π + 2
9. (80 + 2π₯)(100 + 2π₯); 4π₯2 + 360π₯ + 8000
10.
11.
12.
13.
14. 4π2π2(π + 4π β 2ππ2)
15. 3π2π2(4π2π2 + 12π β π3)
16. (π₯ + 3π¦)(π₯ β 4)
17. (2π + 3π)(2 β 5π)
18. a. 7.2 feet
b. 1.8 seconds
19. (π‘ β 3)(π‘ + 5)
20. (π β 7)(π + 4)
21. (π β 2)(π + 7)
22. (π₯ β 9)(π₯ + 5)
23. -4, 1
24. -3, -6
25. -2, 3
26. -5, 3
27.
28.
29.
30.
31. a. 4 feet
b. 8 feet
32.
33.
34.
35.
36.
37.
38. a. 1.25 seconds
b. About 1.14 seconds
39.
40.
41.
42.
Chapter 9 Questions Answers
1.
2.
3.
4.
5. a. 44 feet
b. 1.875 seconds
6. -2, 1
7. -3, 1
8. About 2.7 seconds
9.
10.
11. A
12. B
13. D
14. C
15. After 7 hours
16. -6.1, 2.1
17. -3.4, 1.8
18. 4
19. -4.5, 1.1
20. 0.8, 15.2
21. 0, one real solution
22. -15, no real solutions
23. N/A
24. N/A
25. N/A
26. N/A
Chapter 10
Questions
Answers
1.
2.
3.
4.
5. About 14.19 seconds
6. 12β21
7. 3π₯2π¦π§3β5π¦
8. 42 + 7β10
26
9. 24 β 3β14
50
10. 21β2
11. 12 + 9β2
12. 252
13. 20β3
14. β
2β3
3
15. 20β5 β 28β3
16. 51β5 + 15β10
17. 8
18. 129
19. 6 + 2β15
20. -3
21. 2
22. 8
23. 13.89
24. 12
25. 3.35 inches
26. 0.6157
27. 0.5317
28. 0.2924
29. 0.2588
30. 1.4281
31. 0.9063
32.
33.
34. 135.2 feet
Chapter 11
Questions
Answers
1. N/A
2. N/A
3. N/A
4. 5
5. 1
6.
7.
8.
9. -3, 3
10. β
7
2, 4
11. 4
12. β
3
2, 4
13. 4, -2
14. -2
15. -2, 0
16. 2π
9π3
17. 3π‘ β 4
3(π‘ β 3)
18. 14π₯3π¦2
5π§3
19. 2(π β 1)
3(β + 2)
20. 281.25 inches
21. π₯ β 1
22. π + 2
π
23. 2π + 1
24. 19
3π
25. 2π β 1
π + 2
26. π2 β 4π + 12
(π + 2)(π β 2)
27. 2π2 β 2π + 1
(π β 2)(π + 3)(π β 3)
28. 14.5
1.5π₯
29. 1
83
115
30. 6(π + 2)
(π + 1)2
31. -1 or 2
32. 4
33. -2
34. 3
2
35. 1.2 hours