Expressions
Simplify the following expression:
(4x-7)+(3x+9)
7x+2
What is the constant in the equation below?
3x - 5 = 10
-5
What is the inequality symbol below?
>
greater than
complete set of items studied
Simplify the following expression:
1/2 ( x + 6)
1/2x + 3
Solve the equation:
2x - 10 = 16
x = 13
What do you need to do with an inequality symbol when you multiply or divide a negative?
Flip the inequality symbol
a part of a population
Simplify the following expression:
(3x-4) - (2x -9)
x-13
Solve the equation:
-4 (x - 3) = 20
x = -2
Solve the inequality below:
3x + 2 < 14
x < 4
There are 300 students in 7th grade. Paul takes a random sample to find out which school subject the students in 7th grade prefer.
Which group of students represents the most representative sample of students?
A. 10 of Paul’s closest friends
B. 10 randomly selected students from each grade
C. 10 randomly selected students from each 7th grade homeroom
D. 10 randomly selected students on the 7th grade basketball team
C. 10 randomly selected students from each 7th grade homeroom
Simplify the following expression:
(3x - 10) + (3x + 12)
6x + 2
Solve the equation:
2/3x + 7 = 19
x = 18
Solve the inequality below:
-3x + 7 ≤ 10
x ≥ -1
How do you determine a graph that has more variability?
How wide the data is spread on the dot plot
What expressions represent getting 30% more of an item?
A. 0.7x
B. x + 0.3x
C. x + 0.7x
D. 1.3x
E. x(1+0.3)
B, D, and E
Ethan bought 4 stickers and $1.75 keychain. If he spent a total of $9.75, how much did each sticker cost?
Write an equation that represents the scenario.
4x + 1.75 = 9.75
You open a bank account and deposit 1,000 dollars. It is the end of the month and you need to withdraw $15 a week for the next 5 weeks. You don’t want your account to fall below $50.
Will your bank account survive at the end of the month?
Yes it will survive
Miss Zerbe and Miss O’Connor each interviewed 100 of their students on Tuesday about their favorite foods. The results are below.
Sample #1 - 12 hamburgers - 14 Tacos - 74 Pizza
Sample #2 - 12 hamburgers - 11 Tacos - 77 Pizza
Based on the data, how many students could we infer prefer Tacos if there are 800 students at Bates?
About 100 students