Homework for College Algebra

Before you start, please read the following handouts:

(1) Directions for Homework:  if you fail to follow those directions, your homework will be too difficult for me to grade and I will have to return it with no grade.

(2) About Homework: important information about the significance of homework for this course.

(3)  How to do the required homework. suggestions about how to tackle the HW

(4)  How to earn extra credit: information on the extra-credit HW indicated below.

Required homework will be due as noted in the schedule, and may be collected and graded.  Feel free to obtain as much help as needed from me (in or out of class), the tutors, or your classmates to arrive at the book answers for this homework.  Otherwise, ask when you arrive in class.  When collected, I will select a few problems from each HW section to grade, at 5 points per problem.

Late homework:  up to three late (for any reason) homeworks will be accepted at no penalty;  lates in excess of three will receive no credit.

Extra credit homework for a section will  be submitted according to the schedule, with no lates accepted (for any reason).  Write “Extra credit” and the section number at the top of the page.

Extra credit homework is to be your work, and yours alone.  Evidence of collaboration or other kinds of cheating may result in dismissal from class with an F.  See the “Statement on Scholastic Dishonesty” on the First Day Handout.

Following are the exercises to be completed for each section we will cover.  They are found as numbered “Exercises” at the end of each book section.

Section

Required HW

Extra-credit HW

1.1

9, 19, 23, 25, 39, 43, 63, 65, 79, 81, 85, 95

66, 80

1.2

21, 25, 43, 49, 55, 61, 67, 77, 79, 81, 85, 87, 91

62, 82, 88

All  above exercises to be completed by hand.  77, 79 test your understanding of a viewing rectangle.  For 81, 85, and 87, the answers are shown in a viewing rectangle.   You do not need a graphing calculator to do them, or to understand the book answers

1.3.1

23, 25, 27, 33

26, 28, 36

1.3.2

75, 87*, 89*, 91*, 93*, 95*

88*, 90*, 92*, 94*

*explain why it is or is not a function, without reference to a graph (see H/O #1).

All graphs shown on HW and tests must be labeled and scaled (otherwise, they will be ungradeable, and will receive no credit)

1.3.3

1-9 odd, 13-19 odd, 43, 45, 47, 53, 57, 63*, 67*, 69*, 77**, 79**, 81**

50, 82**

* omit verbal                          **explain why or why not

R.2

1, 5, 7, 15, 17, 19, 23, 31, 33

26, 34

1.4

1, 9, 17, 21, 29-35 odd, 37*, 43*, 53*, 63, 65, 69, 73, 75, 77, 83               *graph by hand

74, 84



Word problems:  For problems in the problem list marked with a “W”, follow the presentation rules for them described in the notes (2.3).  Otherwise, your work will be ungradeable and credit will be withheld, even if you ”get the right answer”.

 

 

Required HW

Extra-credit HW

2.1

1(explain your answer), 5, 9, 11, 25, 27, 41, 49, 53

16, 44, 54

2.2.1

5, 7, 9, 11, 15, 17, 19, 33, 47, 49, 51, 65, 71

10, 74

2.2.2

39, 41, 43, 81, 87, 89, 101, 103, 107

82, 88, 90

2.3

5, 9, 31, 35, 41, 79, 88W(ans=189), 93, 101W, 103W, 105W, 107W

102W, 108W

 *”W” denotes word problems with special presentation rules; see H/O #2  for directions

2.4

1-13 odd, 17, 23, 27, 33, 49, 51, 85, 87, 89c, 91, 103

92, 104  

 

2.5

1, 3, 7, 9, 15, 51, 59, 71*, 73*, 77*, 83, 85 

4, 80*, 84

 

*use the method shown by Example 10, p. 150, by me in class, and by the notes

 

 

 

3.1

1-11 odd, 17, 19, 25, 39, 47, 51, 57, 59, 61, 63, 81, 83, 85, 86, 87, 88, 93

82, 94

3.2

33c, 35c, 45, 49, 53, 61, 63,  101, 107W, 113W

56, 112W

3.3

1, 3, 5, 27-33 odd, 51, 61, 63

34, 62

Solve all inequalities using the graphical method shown by Example 1,  p. 207, by me in class, and by the notes  Sketch must be shown.

3.4

1-9 odd, 11, 13ab, 15ab, 29, 31, (41-53 odd)**, 77, 83-89 odd, 97, 99

12ab, 44**, 100*

** by hand.  State the transformations used, and the intermediate formulas obtained.  See H/O #3 for directions.

*also state the equation of the mountain after 20 sec.

 

 

4.1

1-11 odd, 15, 23, 39, 43, 57, (77, 79, 81)*, 91, 93, 115, 123

82*, 94, 120

 

* “symbolically”, as shown on p. 248, by me in class, and in H/O #4.

 

4.2

1, 3, 5, 13*, 15*, 25, 41-47 odd, 53, 55, 67, 75, 77, 83

16*, 68

 

*for part (a), explain your choice

 

4.3.1

7, 9*, 13, 14**, 15, 37, 39, 41, 43, 47, 49, 63

10, 64

*use synthetic division    ** answer: x3 - 2x2 + 4x – 8 and 1

4.3.2

69, 73, 75, 77, 79, 103, 107

70, 78

4.4

1-7 odd, 11, 13, 27, 29, 47, 51, 63, 65, 71, 75, 77, 93, 101*

54,78, 104*

solve equations symbolically          *read about “Factoring by Grouping” p. R-29

4.5.1

1, 5, 15, 21, 23, 31, 33*, 35*, 57cd**, 61cd**, 101, 113

58cd**, 60cd**

*explain your choice     ** do not use graphing technology;  use the method shown by me and by H/O #5.

4.5.2

71**, 79a, 105, 117, 119, 123, 129, 133, 137

114, 134

4.6.1

3, 9, 13a, 15a, 21, 23

16a, 20

4.6.2

29a, 37, 43, 47, 49    

38, 44, 48

4.7

(1, 5, 9)*, 23, 27, 31-37 odd, 39**, 43**, 45, 51, 53, 65, 67, 77, 83, 89ac  

40**, 50, 70, 88

*show work (no calculator)             **state transformations used

 


5.1.1

1, 3, 5, 7, 9, 13, 17, 21, 27, 37, 53, 57, 61

58, 100

5.1.2

55, 65, 73, 85, 99, 105, 117, 129

70, 104

5.2

1, 3, 5, 7, 13, 15, 19*, 23*, 29*, 39, 41, 45, 71, 81, 93, 95, 101, 105, 107, 121, 123, 129, 133

24*, 82, 102

Compute inverses of functions given by formula as shown in Example 4, p. 386, by me in class, and in the notes.

 * if not one-to-one, prove it as shown on p. 384, Example 2, by me in class, and in the notes (without reference to a graph).

5.3.1

1-21 odd, 25, 27, 29, 41-47 odd, 53, 59, 61(name the transformations used), 69, 71, 73

42, 56 

5.3.2

87, 91a, 93, 95a, 99

92ab, 100bcd

5.4

1, 5, 7, 17-23 odd, 31-37 odd, 45, 49, 53, 55, 57, 61, 69, 73, 75, 79, 83, 99-107 odd, 117-125 odd

122ab, 126

5.5

1, 5, 11, 13, 23, 25, 31, 43, 45, 47, 53*, 55*, 65, 67, 83, 89

56*, 80, 88   

 

                                * let x = 1 to 5 

5.6

1, 3, 5, 9, 21, 27, 33, 37, 45, 49, 53, 69a, 73-79 odd, 85(see Newton’s Law, p. 448), 93, 95

30, 80, 84

 

 

6.1

1, 21, 25, 37, 49c, 51, 67a, 69a, 79, 83, 85abW, 99, 103

88W, 104

6.2

1, 3, 5, 9, 17, 21, 23, 29bW, 31bW, 71W, 75W, 79W

16, 80W

all systems are to be solved symbolically, by elimination

6.4.1

1, 5, 9, 11*, 17, 25, 27, 33, 37

32, 36

*if answer is “no”, explain

6.4.2

35, 57, 59, 73W, 75W

34, 60, 74W

6.5

1, 13, 23, 37, 39, 41, 51, 55, 57, 59

56, 60

6.6

1, 5, 9, 21, 29, 53, 71

30, 54, 58, 70W