, INSTRUCTORS SOLUTION MANUAL C TRIMBLE AND
ASSOCIATE BEGINNING & INTERMEDIATE ALGEBRA 8TH
EDITION ELAYNE MARTIN GAY
Contents
Chapter 1 1
Chapter 2 34
Chapter 3 104
Chapter 4 160
Chapter 5 212
Chapter 6 253
Chapter 7 295
Chapter 8 368
Chapter 9 410
Appendix A 467
Appendix B 469
Appendix C 471
Appendix D 473
Practice Final Exam 475
,
, Chapter 1
Section 1.2 Practice Exercises 12 since 12 simplifies to 3.
c. 3
4 4
1. a. 5 < 8 since 5 is to the left of 8 on the number
line. 7. a. |8| = 8 since 8 is 8 units from 0 on a
number line.
b. 6 > 4 since 6 is to the right of 4 on the
number line. b. |9| = 9 since 9 is 9 units from 0 on a number
line.
c. 16 < 82 since 16 is to the left of 82 on the
number line.
c. |2.5| = 2.5 since 2.5 is 2.5 units from 0 on
a number line.
2. a. 9 3 is true, since 9 > 3 is true.
5 5 5 5
b. 3 8 is false, since neither 3 > 8 nor 3 = 8 is d. since is unit from 0 on a
true. 11 11 11 11
number line.
c. 25 25 is true, since 25 = 25 is true.
1 1 1 1
e. since is unit from 0 on a
d. 4 14 is true, since 4 < 14 is true. 2 2 2 2
3. a. 3<8 number line.
b. 15 9 8. a. |8| = |8| since 8 = 8.
c. 67 b. |3| > 0 since 3 > 0.
4. The integer 10 represents 10 meters below sea c. |7| < |11| since 7 < 11.
level.
d. |3| > |2| since 3 > 2.
5. a. The natural number is 25.
e. |0| < |4| since 0 < 4.
b. The whole number is 25.
Vocabulary, Readiness & Video Check 1.2
c. The integers are 25, 15, 99.
1. The whole numbers are {0, 1, 2, 3, 4, ...}.
7 3
d. The rational numbers are 25, , 15, , 2. The natural numbers are {1, 2, 3, 4, 5, ...}.
3 4
3.7, 8.8, 99. 3. The symbols , , and > are called inequality
symbols.
e. The irrational number is 5.
4. The integers are {..., 3, 2, 1, 0, 1, 2, 3, ...}.
7 3
f. The real numbers are 25, , 15, , 5. The real numbers are {all numbers that
3 4 correspond to points on a number line}.
5, 3.7, 8.8, 99.
6. The rational numbers are
6. a. 0 < 3 since 0 is to the left of 3 on a number a
line. a and b are integers, b 0 .
b
b. 15 > 5 since 15 is to the right of 5 on a
7. The irrational numbers are {nonrational numbers
number line.
that correspond to points on a number line}.
1