True or False
Rational numbers include terminating and repeating decimals, but not continuous decimals.
True
How do you find the range of a set of numbers?
Subtract the lowest value from the highest value.
Is a circle open or closed if it is less than or equal to?
Closed
What is the slope of the line?
-2
Is this equation proportional or non-proportional? y = 2x - 7
Non-proportional
What are the three types of association?
Positive, Negative, No association
List all of the names for the number -86 (Including Real).
Integer, Rational, Real
What is the mean, median, mode, and range of these numbers?
6 , 17 , 9 , 4 , 12 , 5 , 6 , 7 , 8 , 15
mean: 8.9
median: 7.5
mode:6
range: 13
Solve for x.
-6x - 34 = 12x + 38
x = -4
What is the rate of change of these 2 points?
( 4 , - 12 ) ( 6 , - 20 )
Slope = -4
Is this graph proportional or non-proportional?
Non-Proportional
What is the description and association of this scatterplot?
As temperature increases, the sales increase. It is a positive association.
What is the number 9,760,000 written in scientific notation?
9.76 x 106
What is the mean absolute deviation of this set?
32 , 45 , 23 , 35 , 30
5.6
Solve for x
9.2x - 2 + 3.3x = 2x + 8.5
x = 1
Write an equation in slope intercept form.
y = 3/2x + 3
Is this set of data represent a function or not?
(-1,1)(-2,2)(-3,3)(-4,4)(-5,5)
Function
Which scatterplot is non-linear?
D
Write -5.32 x 10-2 in standard form.
-.0532
What is the difference between a sample and a population?
A population is a whole group and a sample is a part of a group. (Ex: Population- KJH sample- 8th grade)
Solve for x
3(2x - 5) = 4x + 8
x = 11.5
What is the linear equation of this table? (y=mx+b)
y = 1/4x - 6
Does this represent a function or not a function?
Not a Function
Based on the scatterplot what would be the best prediction for how many seconds it would take to run 4 kilometers?
About 35 minutes
Order the following set of numbers from greatest to least.
3/4 , 60% , pi , 42/12 , -2.3
42/12 , pi , 3/4 , 60% , -2.3
Is this sample random or not random?
Every 5th person who enters the cafeteria is asked what their favorite food is being served.
Random
Solve the inequality to find x.
-8x + 16 > 2x + 54
x < -3.8
Container A and container B have leaks. Container A has 800 ml of water, and is leaking 6 ml per minute. Container B has 1000 ml, and is leaking 10 ml per minute. When will the two containers be the same? Write an equation to match this situation.
800 - 6m = 1000 - 10m
Is this table proportional or non-proportional?
Proportional
Based on this scatter plot what would be the cost of a 6 ft ladder?
About $60
Order the following set of numbers in ascending order.
41%, 2/5 , .4444... , .42 , square root of 16
2/5 , 41% , .42 , .4444... , square root of 16
Is this sample random or not random?
Spinning a spinner with 3 equally divided sections to determine students' favorite day of the week.
Not Random
Solve and graph the inequality (on a number line).
-3.5x + 12 < -1.5x -36
x > 24
Maricela is going to make jars of jelly to sell at the local farmers market. The supplies for each jar of jelly cost $3.25. She will also pay $30 to rent the booth at the farmers market. Maricela plans to sell each jar of jelly for $4.50.
Write and solve an equation to find x, the number of jars of jelly Maricela must sell for her sales to equal her total costs.
x = 24
Does this graph represent a function or not a function?
Not a Function
What is the best prediction for the number of seconds it will take the elevator to descend to floor 50?
About 24 seconds