Quadratics Revisited
Graphing Polynominals
Raional Relationships
Logarithmic and Exponentil Functions
Interferences & Concusions From Data
100
Factor 7x2 - 6x - 1
(x-1)(7x+1)
100
If the exponent is ... it will touch
Even
100
Add 3/7 + 2/3
9/21+ 2/3
100
log327=
x=3
100
Experiment or Observational study?
To find out whether car accidents are more likely on rainy days, a researcher records the weather conditions during 50 randomly selected accidents for the past year.
Observational study
200
Factor 3rs2 - 9r2s5
3rs2 (1 - 3rs3)
200
What are the x-intercepts of f(x)= 5x3 - 20x
0
-2
2
200
5/9 + 1/9
6/9
200
log4 (1/16)= -2
4-2= 1/16
200
Is this a survey, experiment, or observational study?
Randomly choose 100 people. Ask how many hours a week they exercise, and how healthy they are.
Survey
300
Simplify
4√5
300
Find the y-intercept of f(x)= -2x5 + 8x3 - 6
(0,-6)
300
8/12 - 5/12
3/12
300
-3ex+10 - 6 =81
No Solution
300
Find the standard deviation
The data set below gives the prices of cordless phones at an electronics store.
35,50,60,60,75,65,80
σx= 13.997
400
Multiply (4i)(6+7i)
24i - 28
400
If the exponent is odd, then the graph will...
cross
400
2/5 - 3/20
5/20
400
Solve In 24 = In (6 - 2x)
X= -9
400
What does this symbol represent x̅
Mean
500
2x2 + 10x = 7x + 5
x=1
x=-5/2
500
Is the degree even or odd
f(x)= -2x2 + x
Even
500
x + 6/x= -5
x= -2,-3
500
Solve ln 6 - ln(5x - 9)=3
x= -16
x= 3
500
The difference between the upper and lower quartiles is called...
Interquartile Range