Intermediate Algebra (11th edition)

14.The two lines have the same slope, 3, but the y-intercepts, and

, are different. Therefore, the lines are parallel, do not intersect, and
have no common solution. 15. 1, 3 16. 1, 2, 3 17. ;

inconsistent system 18.length: 200 ft; width: 85 ft 19.New York
Yankees: $72.97; Boston Red Sox: $50.24 20.plane: 300 mph;

wind: 20 mph 21.$2-per-lb nuts: 30 lb; $1-per-lb candy: 70 lb
22.85°, 60°, 35° 23.$40,000 at 10%; $100,000 at 6%; $140,000

at 5% 24.5 L of 8%; 3 L of 20%; none of 10% 25.Mantle: 54;
Maris: 61; Berra: 22 26. 3, 27. 5 28. 0, 0,

1, 2, 30.B; The second equation is already solved for y.

12, 9 32. 33. 3, 34. 5, 3 35. 0, 4

37.20 L 38.U.S.: 37; Germany: 30; Canada: 26

Chapter 4 Test (pages 260–261)

[4.1]1. (a)Houston, Phoenix, Dallas (b)Philadelphia (c)Dallas,
Phoenix, Philadelphia, Houston 2. (a)2010; 1.45 million

(b) 3. 4.

dependent equations

1. inconsistent system

[4.2]10. 11. [4.3]12.Star Wars

Episode IV: A New Hope:$461.0 million; Indiana Jones and the
Kingdom of the Crystal Skull:$317.0 million 13.45 mph, 75 mph

14.20% solution: 4 L; 50% solution: 8 L 15.AC adaptor: $8;
rechargeable flashlight: $15 16.Orange Pekoe: 60 oz; Irish Breakfast:

30 oz; Earl Grey: 10 oz [4.4]17. 18.

Chapters 1– 4 Cumulative Review Exercises

(pages 261–262)

[1.2]1. 2. [1.3]3. 81 4. 5. 6.

8.It is not a real number. 9. 10.

[1.4]11.commutative property [2.1]12. [2.7]13.

[2.2]14. [2.1]15. [2.5]16.

[2.7]17. 18. [2.6]19.
[2.2]20.2010; 1813; 62.8%; 57.2% [2.3, 2.4] 21.pennies: 35;

nickels: 29; dimes: 30 22.46°, 46°, 88° [3.1]23.

[3.2]25. 26. [3.3]27.

[3.2]28. [3.4]29.

[3.6]30. (a) (b) [4.1, 4.4]31.

[4.2, 4.4]33.
[4.3]34.Tickle Me Elmo: $27.63; T.M.X.: $40.00

[4.1]35. (a)x= 8 , or 800 items; $3000 (b)about $400

51 x,y 2 |x- 3 y= 76 51 5, 3, 2 26

6 a^2 + 3 a- 6 51 3,- 326

–3x– 2y≤ 6 –2 –3

0

y

0 x

y

x (–1, –3) (2, –1)

x= 4 - 34 34 4 x+ 3 y= 10

y= 6

C-2, 32 D 1 - q,q 2 1 - q,q 2

x= (^5116) A-q,^24013 D
d-by
a
E-^154 F E^23 , 2F

0.7 - 199 455
-^2320 -^29 - 81 - 81 0.7

EA 52 , 57 BF 51 - 1, 2, 3 26

EA-^23 , 54 , 0BF^51 3,-2, 1^26

51 3, 3 26 51 0,- 226 0 ;

EA-^94 , 45 BF^51 x,y^2 |^12 x-^5 y=^86 ;

51 6,- 426 x + y = 7 x – y = 5

(^05)
–5
y
(6, 1) x
1 2025, 2.8 2 51 6, 1 26
EA^8223 ,- 234 BF
51 26 0 51 - 126 51 26 51 26
51 - 126
51 - 226 51 - 1, 26 51 - 126
51 - 5, 26 51 26 0
1 0,- 42
1 0, 2 2
EXPONENTS, POLYNOMIALS, AND POLYNOMIAL
FUNCTIONS

Section 5.1 (pages 274–278)

1.incorrect; 3.incorrect; 5.correct

7.Do not multiply the bases. 9. 11. 13.

19.The product rule does not apply.

(a)B (b)C (c)B (d)C 23. 1 25. 27. 1 29. 2

0 33. 35. (a)B (b)D (c)B (d)D 37. or

16 55. 57. 59. 61. (a)B (b)D (c)D (d)B

, or 16 65. 67. 69. 71. 73. , or 49

77.The quotient rule does not apply. 79. 81.

141.72,000 143.0.00254 145.
147.0.000012 149.0.06 151.0.0000025 153.200,000

3000 157.
159. (a) (b)
(c)$3243 161.$37,459 163.300 sec 165.approximately
mi 167. 169. 171.

Section 5.2 (pages 282–283)

1.7; 1 3. 5.1; 4 7. 9.8; 0 11.

; 15. ;

19.monomial; 0 21.binomial; 1
23.binomial; 8 25.monomial; 6 27.trinomial; 3 29.none of
these; 5 31.A 33. 35. 37. 39.already simplified

1. 87.function; domain: ; range:
  89.not a function; domain: ; range:

(a) 3 (b) 6

3 0,q 2 1 - q,q 2

1 - q,q 2 1 - q,q 2

4 m^2 + 4 n^2 - 7 n y^4 - 4 y^2 - 4 10 z^2 - 16 z

5 a^4 - 6 a^3 + 9 a^2 - 11 3 y^2 - 4 y+ 2

13 z^2 + 10 z- 3 10 y^3 - 7 y^2 + 5 y+ 8

9 p^2 + 11 p- 9 5 a+ 18 14 m^2 - 13 m+ 6

2 a^2 - 2 a- 7 - 3 z^5 +z^2 + 7 z 12 p- 4

t^4 + 2 t^2 - t+ 5 5 y^3 - 3 y^2 + 5 y+ 1 r+ 13

2 ab^2 + 20 a^2 b 3 m+ 11 - p- 4 8 x^2 +x- 2

t+ 13 s 8 k^2 + 2 k- 7 - 2 n^4 - n^3 +n^2

8 z^47 m^35 x

3 m^4 - m^3 +10;- 3 m^4 ;- 3

2 x^3 - 3 x^2 +x+ 42 x^3 ; 2 p^7 - 8 p^5 + 4 p^3 p^7 ; 1

15; 2^16 ; 1 -1; 3

9 x 3 + 5 q

5.87* 1012 998 mi^2 7.5* 109 4 * 1017

2.10385* 105 3.084* 108 $1* 10121 or $10^122

$1* 109 ;$1* 10121 or $10^122 ;$3.1* 1012 ;

3.85* 104 - 60,000

5.3* 102 8.3* 10 -^1 6.92* 10 -^6

3 p^8 16 q^14

2 3 y^4

3
32 m^8 p^4

125 y^3 x^30

n^10 25 m^18

y^9 8

8 3 pq^10

2 k^5 3

4 k^17 125

4 k^5 m^2

1 6 y^13

4 a^2

1 2 pq

p^4 5

14 k^3
z^4
x^3

625 a^10

4 r^6

1 k^2

1 a^5

1 3

s^12 t^20

64 m^6
t^3
64 t^3 - 216 x^6

27 x 125 r^318

72 1 610 66 1 r^3 42 x^4

25 16

27 8

27 4

(^1130) - 245
1
a^4

1
a^3

4 x^2

1 16 x^2

1 9

1 625

1 54

2 ,

1

27 w^818 x^3 y^8

45 # 42 = 47 1312 810 x^17

a 3 a b

4 = 34 a^4 1 ab 22 =a^2 b^2

5

Answers to Selected Exercises A-11

Intermediate Algebra (11th edition)

Chapter 4 Test (pages 260–261)

Chapters 1– 4 Cumulative Review Exercises

(pages 261–262)

Section 5.1 (pages 274–278)

Section 5.2 (pages 282–283)

5

Answers to Selected Exercises A-11

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