Basic Mathematics for College Students

35. 
    
    
    
    37. 
        
        
        
        39. 
            
            
            
            41. 
                
            
            
            
            
        
        
        
        
    
    
    
    


36. 
    
    
    
    45. 
        
        
        
        47. 
            
            
            
            49. 
                
            
            
            
            
        
        
        
        
    
    
    
    


37. 
    
    
    
    53. 
        
        
        
        55. 
            
        
        
        
        
    
    
    
    


38. 
    
    
    
    59. 
        
        
        
        61. 
            
        
        
        
        
    
    
    
    


39. 
    
    
    
    65. 
        
        
        
        67. 
            
            
            
            69. 
                
            
            
            
            
        
        
        
        
    
    
    
    


40. 
    
    
    
    73. 
        
        
        
        75. 
            
            
            
            77. 
                
                
                
                79. 
                    
                    
                    
                    81. 
                        
                    
                    
                    
                    
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    


41. 
    
    
    
    85. 
        
        
        
        87. 
            
            
            
            89. 91.does not simplify 93. 95.
            
            
            
            
        
        
        
        
    
    
    
    


42. 
    
    
    
    99. 
        
        
        
        101. 
             
             
             
             103. 
                  
             
             
             
             
        
        
        
        
    
    
    
    


43. 
    
    
    
    107. 
         
         
         
         109. 
              
              
              
              111. 
                   
              
              
              
              
         
         
         
         
    
    
    
    


44. 
    
    
    
    115. 
         
         
         
         117. 
              
              
              
              119. 
                   
              
              
              
              
         
         
         
         
    
    
    
    


45. ft 125. 2

1.equation 3.solve 5.equivalent 7. a.
b.neither c.no d.yes 9. a. b.

11. a. b. c. d. 13.5, 5, 50, 50, , 45, 50


12. a.is possibly equal to b.yes 17.no 19.no
    21.no 23.no 25.yes 27.no 29.no 31.yes
    33.yes 35.yes 37. 71 39. 18 41. 43. 3 45.


13. 3 49. 51. 53. 45 55. 0 57. 21


14. 
    
    
    
    61. 20 63. 15 65. 67. 4 69. 4 71. 7
    
    
    
    


15. 1 75. 77. 20 79.0.5 81. 83.


16. 13 87.2.5 89. 91. 93. 4 95.


17. 
    
    
    
    99. 95 101. 103.$6,000,000 109. 0
    
    
    
    


18. 
    

1.solve 3.simplify 5.4, 9 7.subtraction, multiplication

9. a. 2 x 8  24 b. 20 3 x 16 11. a.no
   b.yes 13.7, 7, 2, 2, 14, , 28, 21, 14 15. 6 17. 5

19. 7 21.0.25 23. 25. 3 27. 29. 6

31. 18 33. 16 35.2.9 37. 4 39. 41. 41

43. 6 45.0.04 47. 6 49. 11 51. 7 53. 11

55. 1 57. 59. 4 61. 3 63. 65. 67. 45

69. 49 71. 1 73. 12 75. 6 77. 5 79.3.5
83.commutative property of multiplication
85.associative property of addition

1.Analyze, equation, Solve, conclusion, Check 3.division
5.addition 7.borrow, add 9.equal-size discussion groups,
division 11.s  6 13.g  100 15.1,700, 425, jar, age,
addition, 1,700,x, 1,700, 425, 425, 1,275, 1,275, 1,275, 1,700
17.88, 10, first class, economy, first class, 10, 10x,10x, 88, 11x,
11, 11, 8, 8, 80, 10, 80, 88 19.She will need to borrow $248,000.
21.Alicia could read 133 words per minute before taking the
course. 23.It will take 17 months for him to reach his goal.
25.Last year 7 scholarships were awarded. This year 13
scholarships were awarded. 27.She has made 6 payments.
29.50 cent earned $150 million in 2008. 31.The length of
the room is 20 feet and the width is 10 feet. 33.The scale
would register 55 pounds. 35.The first act has 5 scenes.

Study Set Section 8.5 (page 683)

5

6

1

4

9

2

11

5

10

3



5

2



Study Set Section 8.4 (page 673)

45 x

 200 65°

^831320  5

 6  18  214

2.64  6

 251 2.3

8

0.9 9

x y t h 

c, c c, c

x 6

Study Set Section 8.3 (page 666)

(4x8)

 6 x c 13 a^3  8 12 x

 10 r  20 r 3 a 9 r 16

s^2  12  41 r 130 8 x 9 12 c 34

4 x^2  3 x 9 7 z 15

54 t  85 x ^6 y^10 ^2 x^5

20 b^2 r 28 y s^3 3.6c 0.4r

3 x,  2 x  3 m^3 , m^310 x 0

50 a 75 b 25 x 7 5.6y 7

24 t 16 2 w 4 56 y 32

36 c 42  78 c 18 30 t 90 4 a 1

5 x 15  12 x 27 9 x 10 0.4x1.6 37.The value of the benefit package is $7,000.

39.His score for the first game was 1,568 points.

41.There were 6 minutes of commercials and 24 minutes of

the program. 43.They spend 150 minutes in lecture and

100 minutes in lab each week. 45.The shelter received

32 calls each day after being featured on the news.

47.Three days ago, he waited for 35 minutes.

49.The initial cost estimate was $54 million.

51.The monthly rent for the apartment was $975.

53.She must complete 4 more sessions to get the certificate.

61.600, 20 63.140, 14 65.3,528; 1 67.2,178; 22

1.exponential 3. 3 x,3x,3x,3x,( 5 y)^3 5. a.add

b.multiply c.multiply 7. a. 2 x^2 b.x^4 9. a.doesn’t

simplify b.x^5 11.x^6 ,18 13.base 4, exponent 3

15.base x, exponent 5 17.base  3 x, exponent 2

19.base y, exponent 6 21.base m, exponent 12

23.base y9, exponent 4 25.m^5 27.(4t)^4 29. 4 t^5

31.a^2 b^3 33. 57 35.a^6 37.b^6 39.c^13 41.a^5 b^6

43.c^2 d^5 45.x^3 y^11 47.m^200 49. 38 51.(4.3)^24

53.m^500 55.y^15 57.x^25 59.p^25 61.t^18 63.u^14

65. 36 a^2 67. 625 y^4 69. 27 a^12 b^21 71. 8 r^6 s^9 73. 72 c^17
    75.6,400d^41 77. 49 a^18 79.t^10 81.y^9 83. 216 a^9 b^6
    85.n^33 87. 660 89. 288 b^27 91.c^14 93. 432 s^16 t^13
    95.x^15 97. 25 x^2 ft^2 101. 103. 5 105. 7 107. 12


66. a. 6 b b.xyz c. 2 t 2. a.cd dc
    b.(rs) t r(st) 3. a.factor b.term


67. a. 3 b. 1 5. a.16,1, 25 b. 1 6.five hundred
    less than m(answers may vary) 7. a.h 25 b. 100  2 s
    c. d. 8. a.(n4) in. b.(b4) in.


68. a.(x1) in. b. pounds 10. a.Let x weight of
    the volleyball (in ounces), 2x 2 weight of the NBA
    basketball (in ounces) b.22 oz 11. 72 12. 64 13. 40
    14. 36 15. 28 w 16. 24 x 17.2.08f 18.r


69. 5 x 15 20. 2 x 3 y 21. 3 c 6
    22.12.6c29.4 23. 7 a,9a 24. 2 x^2 ,3x^2 ;2x,x


70. 9 p 26. 7 m 27. 4 n 28.p 18 29.0.1k^2


71. 8 a^3  1 31.does not simplify 32.does not simplify
    33.w 34. 4 h 15 35. a.x b.x c. 4 x 1
    d. 4 x 1 36.(4x4) ft 37.yes 38.no 39.no
    40.no 41.yes 42.yes 43.equation 44.true 45. 21


72. 32 47.20.6 48. 107 49. 24 50. 2 51. 9
    52.7.8 53. 0 54. 55. 2 56.30.6 57. 30

58. 28 59. 3 60.1.2 61. 4 62. 1 63. 20 64.0.06

65.They needed to borrow $97,750. 66.He originally had

725 patients. 67.The original cost was estimated to be

$27 million. 68.There are 3,600 clients served by 45



16

5

p

8

 2 a^2 

1

2

t 6

1

2

,

Chapter 8 Review (page 696)

3

4

Study Set Section 8.6 (page 694)

Appendix V Answers to Selected Exercises A-49