Unit 1
What is the 7th term for the sequence?
3,8,13,18,23
The 7th term is 33.
What is vertex form?
y = a(x - h)2+k
What is the solution to the equation
42x=163x+1
A. -1/2
B. 1/4
C.1/2
D.-1/4
A. -1/2
How are matrices classified?
They are classified by rows and columns.
What is a statistical question?
It is a question that's answered by collecting many pieces of information and summarizing it.
What is the 57th term of the sequence?
3, 8,13,18,23
The 57th term is 283.
What is standard form?
y = ax2+bx+c
What is the value of x, to the nearest hundredth? 53x=35
x=0.74
Add Matrices
[15 8 31 0]+[-15 5 -10 4]
[0 13 21 4]
What are the two types of statistical variables?
Categorial and Quantitative
An auditorium has row seating. The first row has 18 seats and the fifth row has 26 seats. What is the explicit formula for this sequence?
an=18+2(n-1)
Solve for, y=3x2+12x+10
y=-2
What is the value of log41024?
A.1
B.4
C.5
D.24
C.5
What do you do when you multiply a matrix by a scalar?
Multiply each element by the scalar
What are the 3 types of studies?
Experiment
Sample Survey
Observation
Consider the function f(x)=-x2-2x+8. Select the interval of values for which f(x) is positive and increasing.
A: (-1,2)
B: (-4,-1)
C: (-00,2)
D: (-4,00)
E: (-4,2)
B: (-4,-1)
Factor x2-8x+15
(x-5) (x-3)
The population of a town t years after the year 2007 can be modeled by the function p(t)=4500(0.92)t. Which statement is true?
A. The decay rate of the population of the town is 8%
B. The decay rate of the population of the town is 92%
C. The growth rate of the population of the town is 8%
D. The growth rate of the population of the town is 92%
A. The decay rate of the population of the town is 8%
Subtract the two
[4 6 2 12] - [9 15 -7 4]
[-5 -9 9 8]
What does the Z-score measure?
It is a measure of how many standard deviations a data value is above(+) or below(-) the mean.
The school that Lisa goes to is selling tickets to the annual talent to the annual talent show. On the first day of ticket sales the school sold 4 senior citizens and 5 students tickets for a total of $102. The school took in $126 on the second day by selling 7 senior citizens and 5 student tickets. what is the price each of one senior citizens ticket and one student ticket?
4x+5y=102
7x+5y=126
The intersection point is (8,14)
Solve for x using the quadratic formula
0=x2-4x-21
7 and -3
Solve for x. Round your answer to the nearest hundredth if necessary.
In(x-2)=5
e5+2~150.41
Add this together
[30 72 23 18]+[-12 29 44 8]
[18 101 67 26]
A data set with a mean of 75 and a standard deviation of 3.8 is normally distributed
A. What is the three standard deviations above the mean?
B. What percent of the data is from 67.4 to 82.6?
C. What is the z-score for the data value of 69.3?
A. 86.4
B. 95%
C. -1.5