Unit 1
For the equation: 3x-7=2(x+3)
Which value of X would make this equation true?
A)-4 B)-1 C)10 D)13
D) 13
3(13)-7 = 2(13+3)
I=PRT
Arrange the equation to solve for T
I/PR = T
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What fraction is equivalent to 0.2̅?
A) 1/5. B) 2/9
C) 2/7. D) 1/2
B) 2/9
What is the definition of a function?
Every input has one output
It is in the center of the data with equal data points on both sides. It also follows the association of the trend.
A home repair company charges a flat fee of $125 plus an additional $35 per hour, H, a home repair job takes. The company expects to make at least $500 for one such home repair job. Write and inequality for this problem.
35H+125≥500
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The formula for the perimeter of a square is P = 4s,
What equation can you use to find the side length of a square, given its perimeter?
S= P/4
Between what two integers is √21?
A) 0 and 1. B) 4 and 5
C) 6 and 7. C) 10 and 11
B) 4 and 5
What are the x and y intercepts of
2x+10y=12
x=(6,0)
y=(0,1.2)
What is an outlier?
A data point far from the trend.
Solve for x:
4(x+7)=9x-7
x=7
What did they do to get from Step 2 to Step 3?
Problem: 9(x + 2) - 8 = 6 + 7x
Step 1: 9x + 18 – 8 = 6 + 7x
Step 2: 9x + 10 = 6 + 7x
Step 3: 2x + 10 = 6
Step 4: 2x = -4
Answer: x= -2
Subtraction Property
Between what two integers is √29?
5 and 6
What is the slope?
(-7,-10) (-5,-6) (-3,-2)
2
How do you know if a scatter has an negative association?
One variable is increasing, and the other is decreasing.
What is the first incorrect step?
Solve: 3(x + 5) = 2x + 35
Step 1: 3x + 15 = 2x + 35
Step 2: x + 15 = 35
Step 3: x = 50
Step 3
Solve: -4(x – 3) < -20
X>8
3.78 Is what type of number?
Rational and Real
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What are other vocab words for domain and range? (list all of them)
Domain= x values and input
Range=y values and output
What are 5 questions you should answer when analyzing scatter plots?
What is the association? What is the trend? Are there any outliers? Are there any clusters? Is it linear or nonlinear?
Chris is selling his toy airplanes at a school fair. He spends a total of $88 on his supplies. He is selling his toy airplanes for $9 each. If he wants to make a profit of at least $120, which inequality can he use to find the number of airplanes, a, he should sell?
A. 9a – 88 ≥ 120. B. 9a – 88 ≤ 120
C. 88- 9a ≥ 120. D. 88- 9a ≤ 120
A. 9a – 88 ≥ 120
Samantha is hosting a birthday celebration in a reception hall that holds at most 144 people. She has arranged tables that can seat 8 people each. Create an inequality to solve this problem.
8T≤144
√20 is close to what whole number?
4
A line goes through the points (4,2) and (8,3). Write an equation for this line in slope-intercept form.
y=1/4x+1
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