MATH 151 Homework

MATH 151
Unit 1 Homework

Section	Read	Exercises
Section 2.1 Functions and Their Representation	pp. 74 - 85	p. 139 1 - 29 odd
Section 2.2 Linear Functions	p. 99	p. 140 31 – 45 odd
Section 2.3 The Slope of a Line	p. 113	p. 140 47 – 57 odd, 58, 62
Section 2.4 Equations of Lines and Linear Models	pp. 136 – 138	p. 141 63 –71, 73, 75 – 78, 85, 87, 90 p. 162 101 – 107 odd
Section 3.1 Linear Equations	pp. 150 –160	p. 161 31 – 53 odd, 111, 113
Section 3.3 Linear Inequalities	pp. 177 –185	p. 185 11, 21, 23, 25, 29, 33, 36, 43, 47, 53, 55, 66, 75, 77, 91
Section 3.4 Compound Inequalities	pp. 191 - 197	p. 198 13–41 odd, 49, 53, 59–77 odd, 103, 105
Section 3.5 Absolute Value Equations and Inequalities	pp. 201 – 208	p. 209 9, 11, 15, 19–33 odd, 45, 53–71 odd p. 144 1–15 odd
Section 4.1 System of Linear Equations in Two Variable	p. 237	p. 238 11, 15, 21, 27, 31, 47, 53, 57, 63, 65
Section 4.2 The Sub	p. 250	p. 253 9, 11, 19, 27, 35, 37, 49, 53, 65, 71, 89, 91, 97
Section 4.5 Systems of Linear Equations in Three Variables	pp. 274–280	p. 284 19, 21, 23, 25, 29, 35, 37 p. 223 29–49 odd
Trigonometry Day 1	pp. T* 3 - 11	p. T12 1–19 odd, 35, 37, 39, 41,a,b, 43–55 odd p. 313 1, 12, 19, 21
Trigonometry Day 2	pp. T16 – 24	p. 24 5–19 odd, 31–41 odd, 45, 53–56, 59–65 odd p. 316 10, 11, 13–20, 21b, 24, 28

* “T” is the Trigonometry Supplement

Answers to even numbered problems

Section 2.3
p. 140

62) slope: m = 1/2, y - intercept: (0,-2) ,

Section 2.4
p. 141
64) slope: m = -2 , x - intercept: (2,0) , y - intercept: (0,4)

b) f (2007) = 1, 050, 000; cumulative number of U.S. AIDS cases reported in 2007.

Section 3.3
p. 216

Trigonometry Day 1
p. 313
12) ( -4, 2, -5 )

Trigonometry Day 2
p. 24
54)
a) tan 67° ≈ 2.3559
b) cot 42° ≈ 1.1106

56)
a) tan3° ≈ .0524
b) csc18° ≈ 3.2361

MATH 151
Unit 2 Homework

Section	Read	Exercises
Section 5.1 Polynomial Functions	pp. 320-329	p. 330 9, 35, 45, 53, 71, 75, 81, 93, 101, 103, 119, 131
Section 5.2 Multiplication of Polynomials	pp. 334-342	p. 343 5, 7, 8, 13, 21, 27, 39, 41, 43, 45, 49, 59, 63, 69, 77, 79, 85, 87-101 odd
Section 5.3 Factoring Polynomials	pp. 346-354	p. 354 13, 17, 21, 25, 35, 43, 45, 51, 53, 57, 67, 71, 79, 83, 89, 91, 99, 109
Section 5.4 Factoring Trinomials	pp. 358-365	p. 366 81, 85, 87
Section 5.5 Special Types of Factoring	pp. 368-373	p. 373 13, 15, 29, 37, 45, 57, 59, 67, 69
Section 5.6 Summary of Factoring	pp. 375-379	p. 379 1, 3, 19, 21, 25, 27, 31, 33, 37, 39, 41, 43, 49, 53, 55
Section 5.7 Polynomial Equations	pp. 381-388	p. 388 11, 21, 23, 29, 33, 35, 39-42 all, 45, 47, 51, 53, 55, 59, 79
Section 6.1 Introduction to Rational Functions and Equations	pp. 403 –410	p. 412 1, 2, 8, 9, 11, 13, 19 – 27 odd, 37, 41 – 47 odd, 61, 67, 69, 79, 81, 101, 103
Section 6.2 Multiplication and Division of Rational Expressions	pp. 417 – 423	p. 425 23 – 45 odd, 63 –74 odd, 83 – 97 odd
Section 6.3 Addition and Subtraction of Rational Expressions	pp. 428 – 435	p. 437 4, 31, 39, 43, 49, 51, 53, 55, 59, 69, 97
Section 6.4 Rational Equations	pp. 440 – 445	p. 448 5 – 21 odd, 29 – 41 odd, 46, 51, 53, 61, 63, 67, 87, 93, 95, 97
Section 6.5 Complex Fractions	pp. 452 – 458	p. 458 1, 3, 7, 9, 13, 15, 23 – 39 odd

Answers to even numbered problems:

Section 5.2
p. 343
8) No, it equals x² + 2x + 1.

Section 5.7
p. 388
40) Various
42) Not possible

Section 6.1
p. 412
2) 4
8) 0

Section 6.3
p. 437
4) (x + 5)(x – 5)

Section 6.4
p. 448
46) –2