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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. 320329  p. 330 9, 35, 45, 53, 71, 75, 81, 93, 101, 103, 119, 131 
Section 5.2 Multiplication of Polynomials  pp. 334342  p. 343 5, 7, 8, 13, 21, 27, 39, 41, 43, 45, 49, 59, 63, 69, 77, 79, 85, 87101 odd 
Section 5.3 Factoring Polynomials  pp. 346354  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. 358365  p. 366 81, 85, 87 
Section 5.5 Special Types of Factoring  pp. 368373  p. 373 13, 15, 29, 37, 45, 57, 59, 67, 69 
Section 5.6 Summary of Factoring  pp. 375379  p. 379 1, 3, 19, 21, 25, 27, 31, 33, 37, 39, 41, 43, 49, 53, 55 
Section 5.7 Polynomial Equations  pp. 381388  p. 388 11, 21, 23, 29, 33, 35, 3942 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 x^{2} + 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
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