Linear Equations
Exponential
Quadratics
Key Features
Statistics
100
Solve: 4x + 7 = 31
x = 6
100
The equation y = 250(1.05)^t represents the rate at which Susan's savings account is growing. What is the initial amount Susan saved in her account?
250
100
What does an equation have to have to be a quadratic?
x^2
100
Algebra: Is this a function: {(1, 2), (2, 3), (2, 4)}
no because 2 has multiple outputs
100
How do you calculate IQR?
Q3 - Q1.
200
Solve: 2(3x - 4) = 34
x = 7
200
The equation y = 250(1.05)^t represents the rate at which Susan's savings account is growing. What is the growth rate?
5%
200
Algebra: What is the y -intercept of the function? Write your answer as a coordinate point.
f(x)=(x+12)(x+4)
(0, 48)
200
Does the mapping below represent a function? Why or Why not?
no
200
Calculate the interquartile range (IQR) for the data set: 8, 12, 15, 18, 22, 26.
IQR=15
300
Solve: 3x + 3 - 2x = 21
x = 18
300
Is the following growth or decay: f(x) = 7 (0.94)^x
Decay
300
What is the zeros of the following quadratic function?
g(x)=(x-5)(x+3)
(5, 0) and (-3, 0)
300
Do the set of ordered pairs represent a function?
(1, 4) (2,3) (6,5) (5,6) (-1,4) (0,0)
yes this is a function
300
What is the mean of the following list?
7, 3, 9, 10, 2, 1, 10
mean: 6
400
What is the rate of change of the line that includes the following points. (-12, -9) (-3, -3)
= 2/3
400
The population in the town of Huntersville is presently 38,300. The town grows at an annual rate of 1.2%. Find the number population of the town after 9 years
Approximately 42,640 people
400
The following represents the time in seconds it takes Madeline to shoot a basket ball. How long does it take the ball to reach it's maximum height and what is the maximum height?
y = -x^2 + 4x +1
It takes Madeline 2 seconds to shoot the basketball 5 feet in the air.
400
What is/are the x-intercept(s) of this function?
x=3 , x=-4
400
What is the median of bookstore A?
Med:95
500
The amount y(in dollars) of money you have left after playing x games at a carnival is y = -0.75x + 10. How much money do you have after playing eight games?
y = -0.75(8) + 10 y = -6 + 10 y = 4 $4 dollars left after playing 8 games.
500
The equation y = 500(.96)^t represents the amount of followers Will has after t weeks. Is this a growth or decay, and what percent is he changing the amount of followers by?
Decay. He is losing followers at a rate of 4% each week.
500
Does the following have a maximum or minimum? What is the coordinate point of vertex?
(x-7)2 = 36
(7, -36)
500
What is the domain of the function graphed below?
-∞<x<4
500
What would be a reasonable correlation coefficient for the scatter plot above?
This is a strong positive linear correlation of .90 or above.