Algebra 1 Common Core Student Edition, Grade 8-9

*4

*»

I

V)

C

■<5p
p
-S?

-12.6

12.6

4.2

-4.621 8.

8.4

-12.18

Customers

>, 6

= 5cj 4

§- 3

£ 2 1

(^0) a4—- I
<? & J?
s' .(S'

9. Workout Times

-V

ft' -gr ft'ft ft ft ft ft $'^

Minutes

Interval

10. skewed
    11. symmetric
    12. 26.3, 26, 23 and 25
    and 29, 9
    13. 12.1, 12, 12, 2
    14. 11.1, 11.3, 13.4;
    mean or median
    15. 27


11. Movie Lengths (min)
    « I I I I I I I I I I I I I I I I I I I »
    100110120130140 150160170180190


12. Dog Weights (lb)
    < I I I I I I I I I I I I I I I I I
    10 20 30 40 50 60 70 80 90

1 8. Book Lengths (Number of Pages)

H h -I 1 ----^1 ----h

140 180 220 260 300 340 380 420

19. B; the box in A is from about 90 to 110, where the
    box in B is from about 75 to 125. 20. Systematic; good
    sample; do you plan on seeing more or fewer movies in
    the coming year? 21. Stratified; good sample; who do
    you support for student council president? 22. 15,120


20. 6 24. 336 25. 20 26. 360 27. 42 28. 28 29. 126


21. 10 31. 20 32. 35 33. 5 34. 10 35. 40,320 ways


22. 126 outfits 37. \ 38. 1 39. 1 40. | 41. 0 42. 1


23. about 93.3% 44. } 45. j 46. ^ 47. \


24. Dependent; the outcome of the first event affects the
    outcome of the second event. 49. Independent; the
    outcome of the spinner does not affect the outcome of
    the pick.

Sk i l l s H a n d b o o k

p. 798 1. composite 3. composite 5. prime

7. composite 9. prime 11. composite 13. 1, 2, 23, 46
   15. 1, 11 17. 1, 3, 9, 27 19. 2 • 3 • 3 21. 3 • 3 • 3


8. 2 • 2 • 2 • 2 • 2 • 2
   p. 799 1. 2 3. 24 5. 80 7. 33

p. 800 1-11. Answers may vary. Samples are given.

1. $350 3. $300 5. $17 7. 6.90 9. 7 11. $30.80
   8 12 16 20 24 JL JL 12 15 18
   p. 801 1. u , 21, 28, 3B, 42 16' 24' 32' 40' 48


2. If, If, f§, § 7. 9 9- 48 11. 2 13. yes 15. no; £


3. yes 19. \ 21. § 23. ^
   7
   100
   1_
   33

p. 802 1. 0.3 3. 0.2 5. 0.714285 7. ^ 9. 4 11. 6^

p. 803 1. | 3. 3 5. 10^ 7. 9. 11.^9

13- 1 3 ^ 1 5. | 17. if19,2§ 2 1 -3 1 23. 9±

25. 2g
    p. 804 1. ^ 3. S| 5 .3 l 7 .2 5 ^ 9. 2 | 11.
    20. n 22


26. | 15. 1 ^ 17. 27 25
    p. 805 1. 56% 3. 602% 5. 820% 7. 14.3% 9. 11.1%
    11.75% 13.0.07 15.0.009 17.0.83 19.0.15


27. 0.0003 23. 3.65 25. ^ 27
    3
    800

09 Hi 25 313 1. 25ft-

33 — 35 - 800 5

p. 806 1. 64 3. 5 • 24 5. 42 • 32 • 2 7. 64 9. 141

11. 3267 13. (1 • 103 )+ (2 • 102) + (5 • 101) •
    (4 • 10°) 15. (8 • 104 ) + (3 • 103) + (4 • 102 ) +
    (0 • 101) + (1 • 10°)
    p. 807 1. 1.34X 106 3. 7.75 X 10“ 4 5. 111,300


12. 1.895 X 103 9. 1.234 X 105 11. 6.4 X 105
    13. 8.52 X 102 1 5 .1 7 .5 17. 8.95 X 10-12
    19. 3.77 X 1010 21. 1.8X 10-6
    p. 808 1. 22 cm 3. 24 cm2 5. 216 cm3 7. 352 cm3

p. 809 1. X 3. X

X X X

XX X X X X X

X X X X X X X X X

X X X X X X X X X

0 1 2 3 4 5 6 X XXX

X X X X X

1 2 3 4 5

5. Gold Medals Won
   X
   X X X X
   X X X X
   XXXXX X X X
   0 1 2 3 4 5 6 7 8 9 10 11 12 13

The line plot shows that most of the countries won about

3 gold medals. The maximum number of gold medals that

a country won was 13, and the minimum was 1.