Equations and Expressions
Simplify: 4(2x + 3)
8x + 12
Is y = 3x + 1 a function?
yes
What is the sum of the interior angles of a triangle?
180°
What is the mean of: 4, 8, 6, 10?
7
Is √25 rational or irrational?
Rational
Solve: 2x – 5 = 11
x = 8
What is the slope of y = –2x + 5?
–2
Find the volume of a cube with side length 3 cm.
27 cm³
What is the median of: 2, 7, 5, 3, 9?
5
Simplify: –3²
-9
Factor: x² + 5x + 6
(x + 2) (x + 3)
Identify the function rule from the table: x: [1, 2, 3], y: [3, 6, 9]
y = 3x
A triangle has angles 50° and 60°. Find the third angle.
70°
Probability of flipping heads on a coin
1/2 or 50%
Convert 0.75 to a fraction
3/4
3(x - 2) = 2x + 4
x = 10
Determine if this graph represents a function (show vertical line test)
Yes, passes vertical line test
Use the Pythagorean Theorem: a = 3, b = 4
c = 5
What is the mode of: 3, 5, 5, 7, 8?
5
Classify: –7.25
Rational Number
Expand: (x + 3)(x – 2)
x² + x – 6
Compare the slopes of y = 2x + 4 and y = –x + 1
Slopes are 2 and –1, different
Find the circumference of a circle with diameter 10.
31.4 (use 3.14 for π)
What is the probability of rolling a 3 or 4 on a 6-sided die?
2/6 or 1/3
Evaluate: (–2)³
-8