Basic Mathematics for College Students

b.15 mi c.25 days d.route 2 83. a. 16 b. in.

c. in. 85.7,855 sections 93.is less than 95.Zero

97. 
    

1.common 3.build, 5.numerators, common, Simplify

7.larger 9. 11. a.once b.twice c.three times

13.2, 2, 3, 3, 5, 180 15.7, 7, 14, 35, 14, 5, 19 17. 19.

21. 
    
    
    
    23. 
        
        
        
        25. 
            
            
            
            27. 
                
                
                
                29. 
                    
                    
                    
                    31. 
                        
                        
                        
                        33. 
                            
                        
                        
                        
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


22. 
    
    
    
    37. 
        
        
        
        39. 
            
            
            
            41. 
                
                
                
                43. 
                    
                    
                    
                    45. 
                        
                        
                        
                        47. 
                            
                        
                        
                        
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


23. 
    
    
    
    51. 
        
        
        
        53. 
            
            
            
            55. 
                
                
                
                57. 
                    
                    
                    
                    59. 
                        
                        
                        
                        61. 
                            
                        
                        
                        
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


24. 
    
    
    
    65. 
        
        
        
        67. 
            
            
            
            69. 
                
                
                
                71. 
                    
                    
                    
                    73. 
                        
                        
                        
                        75. 
                            
                        
                        
                        
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


25. 
    
    
    
    79. 
        
        
        
        81. 
            
            
            
            83. 
                
                
                
                85. 
                    
                    
                    
                    87. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


26. 
    
    
    
    91. 
        
        
        
        93. 
            
            
            
            95. 
                
                
                
                97. 
                    
                    
                    
                    99. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


27. a. in. b. in. 103. in. 105. a.

b. c. of a pizza was left d.no 107. lb,

undercharge 109. of the full-time students study 2 or

more hours a day. 111.no 113. a.RR: right rear

b.LR: left rear 117. a. b. c. d. 2

1.mixed 3.improper 5. a.
°
b. in.

7.Multiply, Add, denominator 9.

11.improper 13.not reasonable:

15. a.and, sixteenths b.negative, two 17.8, 4, 8, 4, 4,

4, 6, 6 19. 21. 23. 25.

27. 
    
    
    
    29. 
        
        
        
        31. 
            
            
            
            33. 
                
                
                
                35. 
                    
                    
                    
                    37. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


28. 4 41. 2 43. 45.


29. – – 1
    2

− 5 − 4 − 3 − 2 − 1012345

(^8) –
− (^29)
(^2) –
3
(^16) ––
5
1 = 3^1 – 5
 3
1
3
 8
2
7
10
1
2
4
2
3
5
3
5
3
1
4

26
3

68
9
104
5
13
2
34
25
, 1
9
25
19
8
, 2
3
8
4
1
5
 2
5
7
 4  3 12

4
5
, 
2
5
,
1
5
 6
7
8
5
1
3
Study Set Section 3.5 (page 265)
1
32
1
8
3
8
7
10
1
16
17
24
2
6
1
3
3
8
11
16
3
32
7
32

17
60
5
36

1
50
17
54

23
4
20
103
9
20
341
400
5
12
23
10
1
4

3
16

11
20
2
5
22
15
1
3
11
10
2
3
7
6
11
12
4
5
3
8
9
20
24
35
31
36
19
24

3
4

13
9
1
2
1
4
13
28
1
20
9
10
10
21
7
11
3
8

5
21

3
5
2
5
4
15
1
2
5
9
9
9
2
2
Study Set Section 3.4 (page 252)
7
20
Think It Through (page 251)
− 5 − 4 − 3 − 2 − 101234
− 2 − 10  –4  = 4
5
1
120
3
4
49.

51. 
    
    
    
    53. 
        
        
        
        55. 8 57. 10 59. 61. 63.
        
        
        
        
    
    
    
    


52. 
    
    
    
    67. 
        
        
        
        69. 
            
            
            
            71. 
                
                
                
                73. 
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


53. 12 77. 14 79. 2 81. 83. 85.


54. 
    
    
    
    89. 
        
        
        
        91. a. b. 93.
        
        
        
        
    
    
    
    


55. a. b. 97.size 14, slim cut 99. in.^2


56. in.^2 103.64 calories 105.357¢ $3.57


57. cups 109.600 people 111. furlongs


58. 60 117. 4

workday: hr; non-workday: hr; hr

1.mixed 3.fractions, whole 5.carry 7. a.76,

b. 9. a. 12 b. 30 c. 18 d. 24 11.21, 5, 5,

35, 31, 35 13. 15. 17. 19.

21. 
    
    
    
    23. 
        
        
        
        25. 
            
            
            
            27. 
                
                
                
                29. 
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


22. 
    
    
    
    33. 
        
        
        
        35. 
            
            
            
            37. 
                
                
                
                39. 
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


23. 
    
    
    
    43. 
        
        
        
        45. 
            
            
            
            47. 
                
                
                
                49. 
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


24. 
    
    
    
    53. 
        
        
        
        55. 
            
            
            
            57. 
                
                
                
                59. 
                    
                    
                    
                    61. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


25. 
    
    
    
    65. 
        
        
        
        67. 
            
            
            
            69. 
                
                
                
                71. 
                    
                    
                    
                    73. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


26. 
    
    
    
    77. 
        
        
        
        79. 
            
            
            
            81. 
                
                
                
                83. 
                    
                    
                    
                    85. hr
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


27. cups 89. lb 91. in. 93. mi


28. ft 97. a.20¢ per gallon b.20¢ per gallon


29. in. 105. a. b. c. d.

1.operations 3.complex 5.raising to a power

(exponent), multiplication, and addition

7. 
   
   
   
   9. 
      
      
      
      11. 13.3, 6, 2, 2, 2, 5
      
      
      
      
   
   
   
   


8. 
   
   
   
   17. 
       
       
       
       19. 
           
           
           
           21. 
               
               
               
               23. 
                   
                   
                   
                   25. 
                       
                   
                   
                   
                   
               
               
               
               
           
           
           
           
       
       
       
       
   
   
   
   


9. 
   
   
   
   29. 18 31. 33. 35. 37.
       1
       2
   
   
   
   

5

18

5

6

5

32

26

1

4

2

2

3

5

13

30



1

12



7

26



1

6

17

20

23

4

2

3



1

5

a

2

3



1

10

b 1

2

15

Study Set Section 3.7 (page 290)

2

4

5

4

3

8

2

1

4

4

3

4

3

1

4

48

1

2

2

3

4

108

1

2

20

1

16

7

1

6

5

1

4

1

4

461

1

8

4

1

3

3

5

8

 5

7

8

2

1

2

53

5

12

6

1

3

 5

1

4

7

1

2

 1

11

24

397

5

12

10

7

16

5

2

3

3

7

8

9

3

10

5

11

30

11

1

30

62

23

32

579

4

15

71

43

56

31

14

33

13

8

15

10

1

4

129

28

45

102

13

24

147

8

9

121

9

10

132

29

33

59

28

45

714

19

20

376

17

21

 3

1

6

 2

3

8

6

11

15

3

7

12

76 

3

4

3

4

Study Set Section 3.6 (page 279)

3

4

7

5

12

6

2

3

Think It Through (page 278)

8

1

2

1

1

4

42

5

8

76

9

16

 1

1

3

2

2

3

2

1

2

11

3

3

2

3



64

27

     2

10

27

 1

1

4

5

16

35

72

 8

1

3

2

1

2

25

9

    2

7

9



9

10

 13

3

4

1

10

21

2

1

3

6

9

10

4

9

7

2

5

8

1

6

(^1) –
3
= –3^1 –
2
(^3) –
2
= 1
− 5 − 4 − 3 − 2 − 1012345
(^10) – ––
3
(^98) – ––
99
(^1) –
7
3
Appendix V Answers to Selected Exercises A-39