Step 2 Answers

Day 7

  1. 1/6
  2. 3/5
  3. 3/5
  4. 1/49
  5. 5 1/3
  6. 16 1/3
  7. 16 and 15/32
  8. 5 and 1/10
  9. 7 and 21/25
  10. 2

Day 8

  1. 40 minutes
  2. 85 minutes
  3. science
  4. science
  5. 3 and 5/12 hours
  6. 1/6 hours
  7. 4 and 3/4 hours
  8. 19/20 hours
  9. Bible
  10. 3/4 hours
  11. 5 minutes
  12. 3 and 3/4 hours
  13. 1:15 pm

Day 9

  1. 71.291
  2. 269.14
  3. 89.14
  4. 23.35
  5. 49.1
  6. 34.7628
  7. 2.3532
  8. 1.06

Day 10

  1. 53.16
  2. 2
  3. 20/21
  4. 9/10
  5. 14/15 – 12/15 = 2/15
  6. 2/15

Day 11

  1. 1/2  1:2  1 to 2
  2. 4/5  4:5  4 to 5

Practice

  1. $1.56 is the cost per dozen at store #2, so store #1 has the better price.
  2. 5 cents < 6 cents  The big can gives you more for your money.
  3. 8.67 > 8.25  Mario got the better deal.
  4. 6 cents
  5. 1.5 < 1.75  The local market is cheaper.
  6. 5.7 minutes < 8 minutes  Elsie was faster per lap.
  7. 75 < 80   280 miles in 3.5 hours is traveling faster.

Day 16

  1. .6
  2. 1.45
  3. 1/4, 25%
  4. 2.2 = 2 2/10 = 2 1/5
  5. .85 < .854  (almost identical, but Adriana’s a little more)
  6. 20% < 23% Leslie’s

Day 17

  1. 9/6
  2. 4:7 or 4/7
  3. 25/145 = 5/29
  4. ? = 100 because 9 x 4 = 36 and 25 x 4 = 100
  5. 1/4 = 5/?  ?= 4 x 5 = 20 oranges
  6. 1/.38 = 3.5/?  3.5 x .38 = ? = $1.33

Day 19

Number Properties

  1. 14 + 16 + 7 + 23 = 30 + 30 = 60
  2. 6 + 14 + 21 + 9 = 20 + 30 = 50
  3. 64 x 10 = 640
  4. 10 x 12 = 120
  5. 8 (30 + 2) = 240 + 16 = 256
  6. 4 ( 50 + 7) = 200 + 28 = 228
  7. 4×2 + 4×3 = 8 + 12 = 20
  8. 5×8 + 5×9 = 40 + 45 = 85

#6: 2x + 8     and     15 + 5x

Day 20

Writing expressions: $10 + $3h

  1. 48
  2. 27
  3. 10
  4. 8
  5. 32
  6. 23,265

Day 21

  1. 67
  2. 13
  3. 7
  4. 6
  5. n + 26
  6. 6 x 5
  7. 4x + 6y – 2
  8. 6x2 + 11x + 18
  9. 11x2 + 5x + 1
  10. 6x + 11
  11. 3x – 11
  12. 9x – 8
  13. 4xy + 4
  14. 15x + 11y

Day 23

  1. 48 + 35 ≠ 93; 35 is not a solution
  2. 14 x 8 = 112; 8 is a solution
  3. 104 ÷ 8 = 13; 104 is s solution
  4. 112 – 23 ≠ 79; 112 is not a solution
  5. 98 – 34 = 64; 98 is a solution
  6. 14 x 7 ≠ 105; 14 is not a solution
  7. 94 ÷ 3 ≠ 26; 3 is not a solution
  8. 88 + 79 =167; 88 is s solution
  9. 18 + 36 = 54; 18 is a solution
  10. 112 – 35 ≠ 96; 112 is not a solution
  11. 12(7) = 84; 7 is s solution
  12. 7(8) = 56; 8 is a solution

Day 24

  1. m = 18
  2. k = 24
  3. v = 11
  4. b = 5
  5. x = 1
  6. p = 16
  7. b = 32
  8. p = 25
  9. b = 36
  10. a = 19

Day 25

  1. x + 19 = 24subtract 19 from both sidesx = 24 – 19 = 5
  2. 10 = s + 3subtract 3 from both sidess = 10 – 3 = 7
  3. r + 11 = 50subtract 11 from both sidesr = 50 – 11 = 39
  4. q – 8 = 9add 8 to both sidesq = 9 + 8 = 17
  5. 3 = y – 16add 16 to both sidesy = 3 + 16 = 19
  6. b – 13 = 18add 13 to both sidesb = 18 + 13 = 31
  7. a + 17 = 42subtract 17 from both sidesa = 42 – 17 = 25
  8. 12 + n = 28subtract 12 from both sidesn = 28 – 12 = 16
  9. 15 = x – 7add 7 to both sidesx = 15 + 7 = 22
  10. m – 24 = 9add 24 to both sidesm = 9 + 24 = 33
  11. 39 = e – 2add 2 to both sidese = 39 + 2 = 41
  12. z + 68 = 77subtract 68 from both sidesz = 77 – 68 = 9

Day 27

  1. 12q = 36 divide both sides by 12  q = 36/12 = 3
  2. 52 = 13b  divide both sides by 13  b = 52/13 = 4
  3. 64 = 8m  divide both sides by 8  m = 64/8 = 8
  4. 20 = 5y  divide both sides by 5  y = 20/5 = 4
  5. 6s = 30  divide both sides by 6  s = 30/6 = 5
  6. f/3 = 12  multiply both sides by 3  f = 12(3) = 36
  7. d/2 = 13  multiply both sides by 2   d = 13(2) = 26
  8. 7 = n/7  multiply both sides by 7  n = 7(7) = 49
  9. f/7 = 14  multiply both sides by 7  f = 14(7) = 98
  10. g/4 = 6  multiply both sides by 4  g = 6(4) = 24
  11. k/20 = 10  multiply both sides by 20  k = 10(20) = 200
  12. 77 = 11r  divide both sides by 11  r = 77/11 = 7

Day 31

direct variation table.png

2)  Yes, 2x + 10 = y

3)  Yes, 2x = y

5)  2x = y

6)  3x = y

7)  3x = y

8)  48x = y

9)  x(1/5) = y

Day 33

  1. 96 mm2
  2. perimeter: 38 inarea: 86.25 in2
  3. 17 cm2
  4. 90 ft2
  5. 17.5 in2
  6. 48 cm2

Day 34

  1. 27 m2
  2. 15 yd2
  3. 26 ft2
  4. 48 cm2
  5. 3 x 2 + 2 x 7 = 20 in2
  6. 27 x 24 + 6 x 9 = 702 ft2
  7. 14 square units

Day 35

  1. 162 in3
  2. 144 ft3
  3. 120 m3
  4. [(1/2) 4.0 x 9.0] * 8.1 = 145.8 cm3
  5. 63.75 m3
  6. 1250 cm3
  7. 3 ft
  8. 20 in
  9. 6 cm

Day 38

1) V = 48, SA = 88
2)  V = 15, SA = 46
3)  V = 240, SA = 236
4)  V = 421.875, SA = 337.5 (OR V = 421 7/8, SA = 337 1/2)
5) V = 48, SA = 108
6)  V = 264, SA = 312
7) P = 48
8) P = 9
9) A = 21
10) A = 48

Day 40

  1. Mean: 137/13 = 10 7/13 or 10.54Median: 10Mode: 12
  2. Mean: 299/13 = 23Median: 22Mode: 22
  3. Mean: 81/16 = 5 1/16 or 5.06Median: 5Mode: 3
  4. Mean: 3732/7 = 533 1/7 or 533.14Median: 532Mode: 532

Day 41

  1. Range: 32 – 12 = 20 MAD…First, find the mean: 293/13 = 22.5Next, find the distance (absolute value) between each data value and the mean:|30 – 22.5| = 7.5|21 – 22.5| = 0.5|18 – 22.5| = 4.5|19 – 22.5| = 3.5|23 – 22.5| = 0.5|24 – 22.5| = 1.5|26 – 22.5| = 3.5|32 – 22.5| = 9.5

    |30 – 22.5| = 7.5

    |22 – 22.5| = 0.5

    |12 – 22.5| = 10.5

    |15 – 22.5| = 7.5

    |21 – 22.5| = 0.5

    Finally, find the average of those absolute value differences:

    (7.5 + 0.5 + 4.5 + 3.5 + 0.5 + 1.5 + 3.5 + 9.5 + 7.5 + 0.5 + 10.5 + 7.5 + 0.5)/13 = 57.5/13 = 4.4

    MAD = 4.4

  2. Range = 30  MAD = 9.4     mean = 659/8 = 82.4absolute value differences: 5.6, 8.4, 15.6, 6.4, 14.4, 8.4, 6.6, 9.6average of those differences: 75/8 = 9.4
  3. Range = 81  MAD = 19.7
  4. Range = 12  MAD = 2.9

Day 43

  1. 14.6
  2. 8, 9, 10, and 29
  3. yes
  4. graph6a
  5. graph7agraph9

Day 44

  1. Lakeview (Find the difference between the highest and lowest data points. Lakeview = 26-8 = 18; Mountainview = 18-9 = 9)
  2. 15 and 13.5 (Add the data points and divide by ten, the total number of data points.)
  3. Mountainside MS has a more consistent number of wins because most of the values are in one stem. The wins for Lakeview MS are spread out in three stems.
  4. 12 and 14 (There are 10 data values for each school. Find the average of the 5th and 6th values for each school. Lakeview = (11+13)/2 = 12; Mountainside (14+14)/2 = 14

Analyzing Graphs

  1. 2006
  2. 100
  3. decrease
  4. line graph
  5. range = 7; mode = 20
  6. 5

Day 47

  1. 4 or +4
  2. -15
  3. $40 or +$40
  4. >
  5. <
  6. >
  7. <
  8. -8, -4, 3, 5
  9. -3, -1, 0, 6
  10. -6½, -4, 2, 4.5

Day 48

  1. 21
  2. 4
  3. 10
  4. 2
  5. 5
  6. 0
  7. 6
  8. 11
  9. 20

Day 49

  1. 8
  2. 0
  3. -1.75
  4. -0.25
  5. 1/3
  6. 8
  7. 0
  8. 0

Day 50

  1. (-5, -4)
  2. (6, -9)
  3. A (-4, 5);  B (2, 1);  C (-2, -2);  D (4, -3)

Day 52

  1. 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, etc.  9 x something is a multiple of nine.
  2. 1, 64, 2, 32, 4, 16, 8   Numbers that divide evening into 64.
  3. 4, 8, 12, 16, 20 etc.
  4. 1, 42, 2, 21, 3, 14, 6, 7
  5. 2, 3, 5, 7, 11  (Those are the first five prime numbers. A correct answer is any number that only has 1 and itself as factors.)
  6. 4, 6, 8, 10, 12  (A correct answer is any even number other than 2 and any number that has factors other than itself and one.)
  7. 7 x 5
  8. 2 x 2 x 2 x 2

Day 53

  1. 9 to 6 or 9/6
  2. 3:4
  3. 15:145 = 3:29
  4. 100
  5. 32
  6. $2.09
  7. $2.75
  8. 7 cans for $2.89
  9. 215 miles in 3 hours
  10. 416 feet (barely!)

Day 54

  1. 12 + 18 + 7 + 23 = 30 + 30 = 60
  2. 7 + 13 + 21 + 9 = 20 + 30 = 50
  3. 54 x 10 = 540
  4. 17 x 10 = 170
  5. 35
  6. 73
  7. 86
  8. 14
  9. 9 x 9 = 81
  10. 5 x 5 x 5 = 125
  11. 51
  12. -6
  13. 7x + 2y – 4
  14. 2y – 2x + 4

Day 55

  1. x = 9
  2. x = -15
  3. x = 97
  4. x = 40
  5. x ≤ -60
  6. x ≥ -31.25
  7. 140 is greater than or equal to 6 times the number of tables (t), 140 ≥ 6t, t ≥ 24 tables
  8. 1800 is greater than or equal to 6 times the number of calories per meal (m), 1800 ≥ 6m, m ≥ 300 calories
  9. 2500 ≤ 140x, x ≤ 17 people

Day 56

  1. v = 30 in³
    sa = 57 in²
  2. v = 60 ft³
    sa = 110 in²
  3. v = 160 m³
    sa = 232 m²
  4. v = 90 m³
    sa = 126 m²
  5. 65 units²
  6. 42 cm

Day 57

  1. 21
  2. 25.5
  3. 30
  4. 36.5
  5. 8, 12
  6. 8.5
  7. 8.6
  8. range = 63
    MAD = 17.875

Day 58

  1. 3
  2. 10
  3. 0
  4. 5
  5. 5
  6. M (-6,0)
    N (-3,2)
    P (3,-2)
  7. F (-5,1)
    G (3,4)
    H (0,-5)
  8. capture

Day 61

  1. Commutative Property of Multiplication
  2. Associative Property of Addition
  3. Identity Property of Addition
  4. Associative Property of Multiplication
  5. Distributive Property
  6. Identity Property of Multiplication
  7. Commutative Property of Addition
  8. Identity Property of Multiplication

4.  Inverse Property – Multiply by one half and add negative 2

Day 62

  1. -128
  2. James’ house
  3. -22,500; 34,600
  4. -6, -4, 0, 2, 5
  5. one fifth
  6. Honus is correct
  7. Asia
  8. Asia
  9. 20,602′
  10. 18,602’

Day 63

  • 12 feet
  • -22 feet
  • 25 – 5 = 20 points
  • 18 – 7 = 9 degrees
  • 9 * 12 = $108
  • 350/5 = 70 feet
  1. -6
  2. -2
  3. 11
  4. -12
  5. 26
  6. 0
  7. 118 (50 + 50) + (9 + 9)
  8. 4
  9. -280
  10. 280

Day 64

  1.  -5
  2. 13
  3. 11
  4. -11
  5. 15
  6. -5
  7.  8
  8. -5
  9. 3
  10. -13
  11. -6
  12. -9
  13. -10
  14. 15
  15. -5
  16. 6
  17. -53
  18. 0
  19. 54
  20. 3

Day 65

  1. 0.125
  2. 0.1 repeating (0.111111…)
  3. 0.6 repeating
  4. 0.571428 repeating (0.571428571428571428…)
  5. 0.3  You shouldn’t need to divide this one. Just read the fraction out loud. It tells you what the fraction is.
  6. 1.6 repeating (1.66666…)
  7. 1.8
  8. 0.83 repeating (0.833333…)

Day 66

1. 0.3

2. 0.375

3. 0.533

4. 0.625

5. 0.35

6. 0.18

7. 0.875

8. 0.778

9. 0.90 repeating

10. −33/100

11. 2.25

12. 3.167

13.  5/8

Day 67

  1. 6 jars
  2. 8 weeks
  3. 67.2 miles

Day 68

  1. 38.6
  2. -88.3
  3. 43.2
  4. 10.085
  5. 17.7
  6. 3.7
  7. 46.8
  8. 82.602
  9. -41.03
  10. 124
  11. -18.24
  12. -96.2
  13. -39.56
  14. 37.84
  15. 172.282
  16. 0.052
  17. 0.830
  18. 0.906
  19. 4.219
  20. 0.615

Day 69

1. -17/3
3. 5/4
5. -23/10
7. -13/12
9. -7/8
11. -1/3
13. -29/12
15. -11/14
17. 25/6
19. 151/28

Day 78

  1. x/3
  2. 12 – x
  3. x – 12
  4. 3x – 5
  5. 3/x + 2
  6. 3(x + 5)
  7. 3x + 5
  8. x + 12
  9. 2x
  10. x/2

Day 79

    1. 6x + 1
    2. 11x + 8
    3. 6y
    4. 3x² +11x +10
    5. x² + 6x + 11
    6. 8x + 14y
    7. 9x + 7y + 5
    8. 7x – 8
    9. 9x² + 8x
    10. 6x + 1

Day 80

  1. C
  2. C
  3. B
  4. A
  5. B
  6. D
  7. D
  8. B
  9. C
  10. A
  11. C
  12. A
  13. A
  14. B
  15. B
  16. B
  17. C
  18. C

Day 81

  1. 12
  2. 51
  3. -4
  4. 27
  5. -3
  6. 6
  7. 131

Day 82

  1. -51
  2. -135
  3. 285
  4. 1
  5. -6
  6. 5
  7. 95
  8. 48
  9. -11
  10. -5
  11. -60
  12. 6
  13. -5
  14. -18
  15. -5
  16. 14
  17. -13
  18. 16
  19. 19
  20. -11

Day  83

  1. 7.1
  2. -1.4
  3. 7.1
  4. 6.3
  5. -8
  6. 6.6
  7. -6.9
  8. 1.8
  9. 9.5

Day 85

  1. a
  2. a
  3. b
  4. b
  5. b

Day 87

  1. -7
  2. -8
  3. -6
  4. -3
  5. -8
  6. 7
  7. 5
  8. -6
  9. 7
  10. 8

Day 89

  1. -6
  2. 0
  3. 2
  4. -2
  5. 1
  6. 8
  7. -1
  8. 1
  9. -2
  10. 4
  11. -4
  12. -1
  13. -7
  14. 4
  15. -7
  16. 0
  17. 8
  18. -1
  19. 5
  20. -1

Day 93

  1. a > -5
  2. ≤ 12
  3. a < – 8
  4. a > -21
  5. a ≥ 9
  6. ≤ -16
  7. a < -58
  8. ≤ -9

Day 95

Adding and subtracting with inequalities

2) v ≤ -15

4) 9 ≥ n

6) 1 1/2 ≤ x

8) x ≤ 0

10) 1 6/15 > x

12) a ≥ -18.5

 14) n ≥ -8.6

Multiplying and dividing with inequalities

  1. x ≥ 6
  2. x > 8
  3. x < 9
  4. x ≥ 99
  5. b ≥ 96
  6. b > 1/2
  7. x < 3/4
  8. n > 1 1/2
  9. x > -11/4 (-2 3/4)
  10. ≤ -11/4 (-2 3/4)
  11. v ≥ -14.5
  12. n ≥ 11
  13. v > -8.7
  14. -6.4 ≤ n
  15. b > 1/10

Day 96

  1. $200
  2. 6r
  3. 200 – 6r
  4. $20
  5. $50
  6. (-(1/2), -7) and (0, -4)
  7. (1, 5) (3, 6) ((1/2), 8)
  8. (3, 0) (2, -4)

Day 98

1 1/3 cups of sugar per dozen cookies

  1. 14/55 inches per hour
  2. Trail Mix A is the best buy.
  3. Grant walked at a faster rate.

Day 101

  1. 40 miles per hour
  2. two thirds
  3. 6 to 1
  4. one third
  1. 42 mph
  2. $392
  3. 19 minutes
  4. 195 ounces
  5. 15 inches
  6. 25 feet

Day 102

  1. yes, k=12
  2. no
  3. yes, k=12.4
  4. yes, k=7.25
  5. yes, k=15
  6. no
  7. yes, k=4
  8. no
  9. yes, k=6000
  10. yes, k=5

Day 103

  1. Yes, k = 1.5
  2. Yes, k =  4 1/8
  3. no
  4. yes, k = 1/4
  5. no
  6. yes, k = 1.25
  7. no
  8. yes, k = 0.8, y = 0.8x
  9. no                            
  10. no
  11. yes, k = 5/2. y = (5/2)x
  12. no

Day 104

  1. 15% decrease 12/80 = 3/20

Day 105

1. -62%

2. 45

3. -17.5%

4. 166.67%

6. 180

7. 9.9

8. 36.84%

9. 67.13%

10. 181.3

11. -27.59%

12. 68.35%

13. 45

14. 132.77%

15. -46.18

16. 13.5

17. Discount per computer: $117.48

Total Discount: $704.88

Final Cost: $5169.12

18. $225.25

19. 231.76%

Day 106

  1. $120.00
  2. $100.00
  3. $81.00
  4. $12.00
  5. $2295.25
  6. $2515.80
  7. 8.5%
  8. 6.25%

Day 107

  1. $756
  2. $66.70
  3. $518.75
  4. $9828
  5. $41.04
  6. 32%
  7. 8.5%

Day 108

1. -2

3. -10

5. 3

7. 4

9. -1

11-6

13. -2

15. 3

17. -16

19. 16

Day 110

  1. $17.25
  2. 75 calories per ounce
  3. 3.8 envelopes per minute
  4. 57.8 miles per hour
  5. 4.8 yards per second
  6. 392 miles per hour
  7. 3.6 earned runs per game

Day 112

  1. 121.5 kilometers
  2. 850 miles
  3. 2.5 centimeters
  4. 1 in : 60 miles

Day 114

  1. 75%
  2. 8
  3. 21
  4. 9
  5. 4/3
  6. 16/9

Day 118

  1. ∠ CFD and ∠ CFA
  2. ∠ BFA and ∠ BFC, ∠ BFC and ∠ CFD, ∠ CFD and ∠ DFE, ∠ DFE and ∠ EFA, ∠ EFA and ∠BFA, ∠ CFE and ∠ CFB
  3. ∠ BFA and ∠ BFC
  4. ∠ CFB
  5. ∠ BFA
  6. ∠ CFA
  7. No, they don’t have a common side.
  8. No, they don’t have a common side.

Day 120

1) obtuse

3) right

5) obtuse

7) alternate interior

9) alternate exterior

11) 117°

13) 63°

15) 84°

17) 34

19) 29

Day 123

  1. Rectangle (6thshape)
  2. Square (4thshape)
  3. Triangle (1stshape)
  4. Trapezoid (3rdshape)
  5. Circle (5thshape)
  6. Parallelogram (2ndshape)

Day 126

  1. 125.6
  2. 69.08
  3. 31.4
  4. 43.96
  5. 18.84

Day 127

  1. 51 square inches
  2. 79.25 square inches

Day 134

  1. 8 cubes

  2. 8 cubes

  3. 0 cubes

  4. 0 cubes

  5. 27 cubes

  6. 8 cubes

  7. 12 cubes

  8. 6 cubes

  9. 64 cubes

  10. 8 cubes

  11. 24 cubes

  12. 24 cubes

Day 136

  1. 80 m2
  2. 24 m2
  3. 78 km2(NOTE: GVL says 178, but I’m not getting that value.)
  4. 110 m2
  5. 96 km2
  6. 60 ft2
  7. 47.4 m2
  8. 70.2 km2
  9. 61.6 ft2
  10. 66 mi2

Day 141

  1. 3.2 inches
  2. 38.4 inches
  3. Centerville
  4. Springville
  5. 2 inches
  6. 3 inches
  7. Springville
  8. Springville

Day 146

  1. as likely as not
  2. unlikely
  3. likely
  4. certain
  5. impossible
  1. P(odd) + P(not odd) = 1/2 + 1/2 = 1
  2. P(less than 3) + P(3 or greater) = 1/3 + 2/3 = 1
  3. P(3 or greater) + P(less than 3) = 2/3 + 1/3 = 1
  4. P(less than 7) + P(7 or greater) = 1 + 0 = 1
  5. P(greater than 6) + P(3 or less) = 0 + 1 = 1

 

  1. P(less than 7) = 1, certain
  2. P(tail) = 1/2, as likely as not
  3. P(purple) = 7/8, likely
  4. P(greater than 7) = 0, impossible
  5. P(8 of hearts) = 1/52, unlikely
  6. P(less than 9) = 1, certain
  7. P(head) = 1/2, as likely as not
  8. P(red) = 1/2, as likely as not
  9. P(sum of 14) = 0, impossible

Day 147

  1. D
  2. C
  3. E
  4. B
  5. A
  6. 7/9
  7. 5/6
  8. unlikely
  9. as likely as not

Day 148

  1. 3/8; 0.375; 37.5%
  2. 8/25; 0.32; 32%
  3. 1/4; 0.25; 25%
  4. 21/40; 0.525; 52.5%
  5. 13/20; 0.65; 65%
  6. 7/20; 0.35; 35%

Day 149

  1. 21/25
  2. 3/8
  3. 7/8
  4. 7/20
  5. 99/130
  6. 31/130
  7. 5/6
  8. 1/6
  9. 5/7

Day 150

  1. D
  2. G
  3. E
  4. J
  5. C
  6. I
  7. A
  8. F
  9. H
  10. B

Day 151

  1. 1/4; 0.25; 25%
  2. 1/2; 0.5; 50%
  3. 5/6; 0.833; 83.3%
  4. 2/5; 0.4; 40%
  5. 3/50; 0.06; 6%
  6. 3/4; 0.75; 75%
  7. 2/9
  8. 1/3
  9. 7/9
  10. 4/9
  11. 9:16
  12. 7:16

Day 152

  1. True
  2. False
  3. False
  4. True
  5. False
  6. True
  7. True

Day 153

  1. 6, 5, 3, 7, 6, 5, 7, 7, 7, 4
  2. 6/10 = 3/5 = 60%

Day 154

  1. 36
  2. 6
  3. Yes
  4. 12
  5. 4
  6. 5

Day 155

  1. 298
  2. 49
  3. 40
  4. 281
  5. 26
  6. 26
  7. 153
  8. 4
  9. No. 7 days * P(snowfall) = 7 days * 20/(28 + 31) = 2.3 days. Jack can expect to be able to get around less than 5 days.
  10. DEF Airlines. ABC Airlines has had delays about 14% of the time.

Day 156

  1. 5/36
  2. 5/12
  3. 7/12
  4. 1/12
  5. 5/12
  6. 1/6
  7. 0
  8. 1/36

Day 157

  1. 1/16
  2. 0.17
  3. 1/36
  4. 1/3
  5. 1/216
  6. 3/10
  7. 1/4
  8. 5/36
  9. 1/4
  10. 1/12
  11. 1/456,976
  12. 1/1000