Expressions
Simplify: 4x + 3x
7x
Solve: x + 6 = 10
x=4
Write the ratio of 6 to 3 in simplest form
2:1
What is 50% of 20?
10
Mean of: 2, 4, 6
4
Simplify: 5a − 2a
3a
Solve: 2x = 14
x=7
A car travels 120 miles in 2 hours. Unit rate?
60 mph
What is 25% of 80?
20
Median of: 3, 7, 9
7
Evaluate: 3x + 2 when x = 4
14
Solve: x − 9 = 3
x=12
If 4 items cost $8, what is the unit rate?
$2 per item
A $40 item is 10% off. Discount amount?
$4
Range of: 5, 10, 15
10
Simplify: 2(x + 5)
2x+10
Solve: 3x + 4 = 19
x=5
Is this proportional? y = 4x
Yes
Final price after 20% off $50
$40
Which is better with outliers: mean or median?
Median
Simplify: 3(x − 2) + 4x
7x-6
Solve: 2(x + 3) = 16
x=5
Find unit rate: 15 miles in 0.5 hours
30 mph
A price increases from $100 to $120. Percent increase?
20% increase
Mean of: 4, 6, 8, 12
7.5