Basic Mathematics for College Students

80.$30,000 81.$6,000, 8%, 2 years, $960 82.$27,240
83.$75.63 84.$10,308.22 85. a.$116.25 b.1,616.25
c.$134.69 86.$2,142.45 87.$6,076.45 88.$43,265.78

1. a.Percent b.is, of, what, what c.amount, base

d.increase e.Simple, Compound 2. a.61%, , 0.61

b.39% 3.199%, , 1.99 4. a.0.67 b.0.123

c.0.0975 5.0.0006 b.2.1 c.0.55375 6. a.25%
b.62.5% c.112% 7. a.19% b.347% c.0.5%

8. a.66.7% b.200% c.90%


9. a. b. c. 10. a. b. c.


10. a. %%b. %%12.6.5%

13.250% 14.93.7% 15. 90 16. 21 17.134.4 18.7.8

19. a.1.02 in. b.32.98 in. 20.$26.24 21.3% 22.23%
    23.$35.92 24.11% 25.$41,440 26.$9, $66, 12%
    27.$6.60, $13.40 28. a.two, left b.one, left 29. a. 80
    b.3,000,000 c. 40 30. 100 31.$4.50 32.16,000 females
    33.$150 34.$28,175 35.$39.45 36.$5,079.60


20. a.six million, fifty-four thousand, three hundred forty-six
    b.6,000,00050,0004,000 300  40  6 2. 239
    3.42,156 4.23,100 5.15 R6 6.80 servings 7.1, 2, 4,
    5, 8, 10, 20, 40 8. 2  3  72 9.120, 6 10. 15 11. 12. 0
    13.$135 14.36, 36 15. a.undefined b. 0 c. 0

d. 14 16. 30 17.1,900 18. 19. 20. 60

21.650 in.^2 22. 23. 24. 25. lb 26. 30

27. in. 28. 29. a.452.03 b.452.030 30.5.5

31.$731.40 32.0.27 33.0.7 34. 29 35. 36. 4

37.40 days 38.2.4 m 39.14.3 lb 40.29%, , 0.473,

, 87.5%, 0.875 41. 125 42.0.0018% 43.78%

44.$428, $321, $107, 25% 45. a.$12 b.$90.18 46.$1,450

1.(a) 3.(c) 5.(d) 7.axis 9.intersection
11.pictures 13.bars, edge, equal 15.about 500 buses
17.$10.70 19.$4.55 ($21.85 $17.30) 21.fish, cat, dog
23.no 25.yes 27.about 10,000,000 metric tons
29.1990, 2000, 2007 31.4,000,000 metric tons 33.seniors
35.$50 37.Chinese 39.no 41.62% 43.1,219,000,000

45. 493 47.2002 to 2003; 2004 to 2005; 2005 to 2006;
    2007 to 2008 49.2001 and 2003 51.2005 to 2006;
    a decrease of 14 resorts 53. 1 55.B 57. 1 59.Runner 1
    was running; runner 2 was stopped. 61. a. 27 b. 22
    63.$16,168.25 65. a.$9,593.75 b.$6,847.50 c.$2,746.25
    67.2000; about 3.2% 69.increase; about 1% 71.it
    increased 73.D 75.reckless driving and failure to yield

Study Set Section 7.1 (page 602)

473

1,000

29

100

5

6

3



5

6

35

3

4

1

12

7

6

24

35



3

4

36

45

9

10

Chapters 1–6 Cumulative Review (page 591)

177 177.8

7

9

3 3.3

1

3

2

25

3

8

1

15

5

4

1

10,000

11

20

199

100

61

100

Chapter 6 Test (page 588)

77.reckless driving 79.about $440 81.no 83.the

miner’s 85.the miners 87.about $42 89.about $30

91.11% 93.21%

95.

97.

101.11, 13, 17, 19, 23, 29 103.0, 4

1.mean 3.mode 5.the number of values 7. a.an even

number b.6 and 8 c.6, 8, 14, 7 9. 8 11. 35 13. 19

15.5.8 17. 9 19. 5 21.17.2 23. 25. 9 27. 44

29.2.05 31. 1 33. 3 35. 6 37.22.7 39.bimodal: ,

1

2

1

3

5

8

Study Set Section 7.2 (page 617)

$10,000

$0

$20,000

$30,000

$40,000

$50,000

$60,000

$70,000

Less than a

high school

diploma

$8,603

more

$13,035

more

$2,815

more

$4,745

more

$12,618

more

Master’s

degree

High

school

graduate

Some

college

Associate

degree

Bachelor’s

degree

Median Annual Earnings of Full-Time Workers

(25 years and older) by Education

Source: Bureau of Labor Statistics, Current Population Survey (2008)

$22,212

$64,028

$30,815 $33,630

$38,375

$50,993

Think It Through (page 616)

$500

$600

$400

$300

$200

$100

Sale price of the item

$100 $200 $300 $400 $500 $600

Original price of an item

1.0

2.0

3.0

4.0

Millions

5.0

6.0

1950

Source: U.S. Dept. of Agriculture

1960 1970 1980 1990 2000 2007

Number of U.S. Farms

Appendix V Answers to Selected Exercises A-47