Chapter 1
A teacher counts the number of students with blue eyes and brown eyes. There are 9 students with blue eyes and 21 with brown eyes
Color of eyes
Predicted= -2 Residual= 5
7
Describe the graph changes of F(x)=(x+5)-6
Left 5 down 6
true or false: Cos(-x) = cos(x)
True
Sin^-1(1/2)
30 degrees
Madison has 1 A, 3 Bs, 1 C and 1D. An A is worth 4, a B is worth 3 and so forth. What is her GPA?
2.667
Calculate the regression line for the data L1: 22,10,20,15,22 L2: 9,15.2,9.3,10.5,7.9
y=-0.52x+19.63
Odd or even or neither
5x^3+7
Neither
True or false
sin(90-x)=cos(x) is the supplements theorem
False
arsin1
90 degrees
What is a "bin"
bin is the interval
when y varies inversely as x
y=k/x
Find Range, mode, Median, Mean, Variance and standard deviation
50, 30, 70, 80, 90
range: 60 Mode: none Median: 70 Mean: 64 Variance 579.991 Standard Deviation: 24.083
odd
what is the domain and range of an inverse sine graph
Domain: [-1,1] Range: [0, pi]
How many values are presented in a box plot
5, min, Q1, Med, Q3 and Max
when is a function exponential decay
y=a(b)^x
Factor the given expression
6x^3-18x^2
6x^2(x-3)
convert 9/10 revolution to degrees
324 degrees
If you walk 30 ft away from a flagpole, the angle of elevation to the top is about 50 degrees. How high is the flagpole?
35.753ft
6, 9, 6, 10, 9, 6, 7, 8, 6, 5, 9, 4, 14, 5, 8, 7
Are there any outliers
Yes, 14 is an outlier
An element has half life of 20 years. How much of a 20 bra sample will be after 30 years?
y=1/2(20)^20/30
Is the function odd even or neither
y=|x|
even
convert 225 to radians
5pi/4
A building has a height of 509m, where you are you estimate the angle of elevation to the top of the building to be about 10 degrees. How far away are you?
2892.045