Scientific Notation
Write 5.17 x 10-6 in standard notation
0.00000517
A company has 30 employees and is gaining 4 new employees each month. Write an equation to represent the situation in slope-intercept form.
y = 4x + 30
Solve for x
x3 = 27
3
Is this a function?
(9, -15), (0, 0), (4, 0), (9, 2)
No, 9 repeats
Solve for x
-3x + 16 + 5x = 8
-4
Write 0.00088 in scientific notation
8.8 x 10-4
Find the slope between the two points
(1, 3) and (6, 2)
-1/5
Estimate the square root of 155
12.4 or 12.5
Is this a function?
(-5, 1), (8, 0), (-1, -1), (19, 6), (4, 0)
Yes
Solve for x
-2x + 16 = x - 2
6
Multiply (3.5 x 106) x (1 x 109)
3.5 x 1015
A student graphed an equation in the form y = mx + b. Which of the following statements about the graph is not true?
A.The graph is a straight line
B. The slope of the graph is m
C. The graph crosses the x-axis at (0, b)
D. The graph crosses the y-axis at (0, b)
C
Classify the number -7
Integer, Rational, Real
Evaluate:
f(x) = x2 - x
f(-6)
42
Solve for x
7(x – 2) = 5x – 10
2
Add (9.7 x 10-8) + (2.2 x 10-8)
1.19 x 10-7
Find the solution to the system of equations
y = 2x
x + 2y = 15
(5, 10)
What is 7/11 as a decimal?
0.63 repeating
Write an equation in slope-intercept form
m = 1/3
(6, 14)
y = 1/3x + 12
3(4 + x) = 7x − 2(2x + 3)
How many solutions does the equation have?
No Solution
The area of Europe is about 9.9 × 106 square kilometers, and the area of North America is about 2.42 × 107 square kilometers. What is the approximate total area, in square kilometers, of Europe and North America combined?
3.41 x 107
Glenn bought a game system and 3 video games for $375. Jim bought a game system and 4 video games at the same store for $410. Find the solution to the system of equations (ordered pair)
The game system is $270
Video games are $35 a game
Write 0.14 as a fraction and simplify
7/50
Write an equation in slope-intercept form
(-4, 0) and (1, 5)
y = x + 4
-4x + 51 = 2x + 7(x + 11)
How many solutions does the equation have?
x = -2, one solution