Probability & Statistics
Equations & Inequalities
Literal Equations
Slope
Systems of Equations
100
You flip a fair coin 3 times get tails each time. What is the probability as a percent?
The probability as a percent is 12.5%
100
Solve for x:
-14 = 4(-2x + 3) + 4x
x = 13/2
100
Solve for w:
A = lw
w = A/l
100
What is the equation for this table?
y = 4x + 3
100
What is the Solution:
One Solution (2, 3)
200
What is the probability of spinning a blue or red as a percent?
The percent for spinning a blue or red is 37.5%
200
Solve for x:
9 + 3x > -5x + 12
x > 3/8
200
Solve for h:
A = 1/2 bh
h = (2A)/b
200
What is the Equation for the table?
y = 2x + (-2)
200
Find the Solution:
6x + 4y = 1
3/2x + 1y = 1/4
Infinite Solutions
They are the same line
300
A country music radio station has asked their listeners to call in and tell them what their favorite type of music is.
Is this Biased or Unbiased?
What type of sample is it? (Simple Random; Convenience; or Voluntary Response)
It is a biased sample, since it is a Voluntary Response Sample.
(Also, the assumption would be that if you are listening to a country radio station, you like country music.)
300
4/5(3x + 10) = 2/3x + 4
x = -30/13
300
Solve for b1:
A = ((b_1+b_2)h)/2
b_1 = (2A)/h - b_2
300
Write the Equation for the graph.
y = (-3)/2x + 3
300
Find the Solution:
3x - 14y = 70
9x + 22y = 18
One Solution
((84)/9, -3)
400
What is the percent increase of ice cream sales from 20oC to 35oC?
The percent increase is 125%.
2500/2000
400
Solve for x:
2.3x + 2.8 > -1.2x + 9.8
x > 2
400
Solve for p:
T = p+ prt
p = T/(rt + 1)
400
Write an Equation for the graph.
y = 2x + 6
400
Find the Solution:
3/2x + 1/2y = 8
1/2y = -3/2x -2
No Solutions
They are parallel lines
500
What was the percent increase from 14oC to 25oC?
The percent increase is about 200%.
500
Solve for x:
3(x2 - 4x) = 10 -(2x -3x2)
x = -1
500
Solve for
Pi:
S = 2Pir^2 + 2Pirh
Pi = S/(2r^2 + 2rh)
500
Write an Equation for the situation.
Tom needed to hire a plumber. The plumber charges 22.50 per hour. The plumber has been a plumber for 15 years.
y= 22.5x
(Remember, extra information like 15 years a plumber is not important to the question)
500
Find the Solution:
One Solution (5, -1)