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Math 89 Final Exam Review

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  • A. -3x +2y = -6 B: 3x + 2y = 6 3x + 2y = 6 C: -3x - 2y = 12 D: -3x + 2y = -12
    D
  • Which is the better deal? Oreos $2.98 for 15 oz OR Chips Ahoy $2.50 for 14 oz
    Chips Ahoy
  • Graph. y = -4
    C
  • Find the mode: 13, 16, 18, 19, 21, 24, 14, 20, 32
    No mode
  • The two rectangles are scale drawings. What is the measurement of x?
    20
  • What is the angle of rotation for the following figure?
    90 degrees
  • Find the volume of the cylinder.A: 4239 B: 1696 C:1130 D:565
    B
  • What is the surface area? A:81 m2 B:297 m2 C:108 m2 D:216 m2
    297 m2
  • What is 5% as a decimal?
    0.05
  • Population or Sample? A survey of 1353 American households found that 18% of the households own a computer.
    Sample
  • A coin is to be tossed twice. p(Tails, Tails) = ___ as a fraction in lowest terms
    1/4
  • If Justin can type 408 words in 4 minutes, how many words can he type per minute?
    102 words per minute
  • Rotate shape O (green) 90 degrees about (0,0) to get...
    Z
  • What is the volume? A:90 cm³ B:150 cm³ C:180 cm³
    A
  • Why is this graph misleading?
    Displaced axis (does not start at 0)
  • A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys. She selects the five closest to her desk. What type of data sampling is this?
    Convenience sampling
  • Find the mode: 44,29,13,44,15
    44
  • What is the surface area?
    216 yd2
  • A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled as a fraction in lowest terms?
    1/3
  • Convert to a decimal 3/4
    0.75
  • One card is randomly picked from a regular deck of cards. What is the theoretical probability that the card picked is a jack as a fraction in lowest terms?
    1/13
  • Find the mean of 16,12,20,15,12
    15
  • You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?
    $8 per pound
  • Find the median: 21, 32, 45, 60, 13, 25
    28.5
  • Which animal was the most common pet?
    Cat
  • A: y= -1x+3 B: y= 4x+3 C: y=(1/4)x+3 D: y= -4x+3
    B.
  • 50% is what fraction in lowest terms?
    1/2
  • Find the mean of 2.2, 1.2, 3.4, 2
    2.2
  • How many degrees is the rotation (from red to blue)?
    180 degrees
  • What is the volume? A:1120 ft2 B:2011 ft2 C:120 ft3 D:1120 ft3
    D
  • What is the y-intercept of the line?
    -1
  • Change this decimal to a percent: 0.52
    52%
  • Why is this graph misleading?
    Displaced axis (does not start at 0)
  • Find the median: 79, 86, 86, 97 100, 95, 67
    86
  • What is the surface area?
    220 cm2
  • Convert to a decimal 1/10
    0.1
  • Population or Sample? All of the teachers in a school are surveyed on their meeting time preferences.
    Population
  • Population or Sample? The average weight of every person entering the mall within 3 hour period was 146 lb.
    Population
  • Rewrite as a fraction: 0.123
    123/1000
  • Alycia earned $20.40 in 3 hours. What is her unit rate in dollars per hour?
    $6.80 per hour
  • What is the x-intercept of x+4y=7?
    (7, 0)
  • A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled as a fraction in lowest terms??
    1/6
  • There are 3 red marbles, 4 blue marbles, 2 green marbles, and 6 clear marbles in a burlap bag. One marble is randomly pulled from the bag. What is the probability the marble was green as a fraction in lowest terms??
    2/15
  • What is the scale factor?
    2
  • A spinner has 8 equal regions. Each region is marked with one of the following numbers: 10, 20, 30, 40, 50, 60, 70, 80. What is the probability of an even number being spun on the first roll?
    1 or 100%
  • Rotate shape A (purple) 90 degrees about (0,0) to get...
    B
  • What is the y intercept? y = 2x - 3
    -3
  • What is the x-intercept of x+4y=7?
    (7, 0)
  • What is the surface area?A: 96 ft2 B:192 ft2 C:84 ft2 D:108 ft2
    A
  • Why is this graph misleading?
    Irregular Scale (the x-axis does not have equal intervals)
  • Scale Factor of ½ is an enlargement or reduction?
    Reduction
  • An eighth-grade math teacher can grade 25 homework assignments in 20 minutes. Is he working at a faster rate or slower rate than grading 36 homework assignments in 30 minutes?
    Faster
  • Rotate shape O (green) -270 degrees about (0,0) to get.
    Z
  • A regular 6-sided die is to be rolled once. What is the probability that a number less than or equal to 4 is rolled as a fraction in lowest terms?
    2/3
  • Rotate shape B (blue) -270 degrees about (0,0) to get.
    O
  • Why is this graph misleading?
    Exaggerated area/volume
  • What is the y-intercept of 2x-5y=35?
    (0, -7)
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