Writing Inequalities
You have to be at least 13 years to watch a PG-13 movie.
p > 13
x + 2 > 4
x > 2
Graph x > 7
Open Circle on 7 to the right
What is the mean of the data set?
3, 7, 1, 9, 8, 8, 6
6
Find the mean as a balance Point:
2,2,2,3,3,4,5,7,8
What is 4
The minimum age for voting is 18 years
x - -3 < 5
x < 2
x > 8
Open Circle on 8 to the right
What is the mode and median of the data set?
3, 7, 1, 9, 8, 8, 6
What is 8 (mode) and 7 (median)
Find the mean as a balance Point:
1, 2, 2, 3, 5, 5
What is 3
The maximum height for trucks is 8 feet.
t < 8
x + 6 < -3
x < -9
x > -7
Closed Circle on -7 to the right
What is the range of the data set?
3, 7, 1, 9, 8, 8, 6
What is 8
Find the mean as a balance Point:
21, 21, 21, 23, 24, 24, 25, 25
What is 23
the value of a number is greater than 4
x > 4
9 - x > -5
x > 4
x < 6
Closed Circle on 6 to the left
What would happen to the mean of the data set if 35 is added as a data point?
3, 7, 1, 9, 8, 8, 6
What is the mean will increase
Find the mean as a balance Point:
15, 15, 15, 16, 18, 19, 21
What is 17
nine is greater than a number increased by three
9 > x + 3
-9 > 3 - x
-6 > x, x < -6
-5 < x
Closed Circle on -5 to the right
What would happen to the mean of the data set if 89 is added as a data point? Find the MEAN ( Round to the nearest integer.
3, 7, 1, 9, 8, 8, 6
What is the mean will increase. The new mean will be 16
Find the mean as a balance Point:
4, 5, 5, 16
What is 7.5