SOLUTIONS
College Algebra with Intermediate
Algebra
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, INSTRUCTOR’S
SOLUTIONS MANUAL
COLLEGE ALGEBRA
R
WITH INTERMEDIATE ALGEBRA
EU
A B LENDED C OURSE
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Judith A. Beecher
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Judith A. Penna
CO
Barbara L. Johnson
ED
Ivy Tech Community College of Indiana
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Marvin L. Bittinger
Indiana University Purdue University Indianapolis
Boston Columbus Indianapolis New York San Francisco
Amsterdam Cape Town Dubai London Madrid Milan Munich Paris Montreal Toronto
Delhi Mexico City Sao Paulo Sydney Hong Kong Seoul Singapore Taipei Tokyo
, Chapter R
Review of Basic Algebra
46. True, since −7 = −7 is true.
Exercise Set R.1 1
48. True, since −11 > −13 is true.
2
RC2. The correct answer is (b). See page R-2 in the text.
50. x < −1
RC4. The correct answer is (f). See page R-3 in the text.
⫺1 0
RC6. The correct answer is (d). See page R-4 in the text.
52. x ≥ −1
SS
8. 12
56. x ≤ 0
11 7
10. −3.43, −11, 12, 0, ,−
34 13
12. All of them
OI 0
58. 3
14. {s, o, l, v, e}
NN
60. 16
16. {1, 3, 5, 7, 9, 11}
62. 127
18. {−3, −2, −1}
13
64.
20. {x|x is an integer greater than 3 and less than 11} 8
CO
66. 16.4
22. {x|x is a rational number or x is an irrational number}, or
{x|x is a real number} 68. 465
24. {x|x is a real number and x ≤ 21}, or {x|x ≤ 21} 0
32. −6 < −3 Exercise Set R.2
34. −7 > −10
RC2. The opposite of a negative number is positive.
1 11
36. −13 <
5 250 RC4. The absolute value of a negative number is positive.
38. −13.99 < −8.45 RC6. The sum of 0 and a negative number is negative.
14 27
40. − = −0.933 . . . and − = −0.509433962 . . . , so RC8. The quotient of a negative number and a positive num-
15 53
14 27 ber is negative.
− <− .
15 53 2. −25
42. 7 > x
4. 2
2
44. t ≤ 10 6. −12
3
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