Number Sense
Is pi rational or irrational?
irrational
Solve x2=16
x=-4 or x=4
How many outputs are there for each input in a function?
1
What is the rule for a 180-degree rotation?
(x,y)-->(-x,-y)
A scatterplot of points that all over the place is what type of correlation?
no correlation
Simplify x2*x4
x6
It's the constant of variation in y=6x
k=6
is y=4x2+5x-2 linear or non-linear?
non-linear
When a pre-image is transformed onto an image the two figures are?
congruent
The points in a scatterplot will create a line call what?
line of best fit
Write 85,000,000 in scientific notation
8.5*107
Solve 2(x + 2) = 2x - 4
no solution
What is the y-intercept in the equation y=3x-5
b=-5
The 3 angles in a triangle add to what sum?
180 degrees
What is the initial value of a plumber who charges $150 for a house call and $75 per hour?
$150
Write 7.18*10-4 in stanard form
0.000718
Solve x3 = -125
x = -5
Which slope is steeper: 1/2 or 1/8?
1/2
What is the volume of a cylinder with a diameter of 6 and a height of 10? state answer in pi form.
90pi units cubed
What is the relative frequency by gender of girls who like to read?
read watch tv total
girls 5 6 11
boys 5 4 9
50%
Simplify (2x4y2z3)3
8x12y6z9
What is the slope of the line with points (6,-3) and (4,2)?
m=-5/2
What is the equation for a helicopter trip that charges $200 for the helicopter and $80 per hour?
y=$80x+$200
Why is a triangle with sides lengths of 6, 8, and 10 a right triangle?
Pythagorean Theorem
(6)2+ (8)2 = (10)2
36 + 64 = 100
100 = 100
Who is the better deal and by how much for catering a party with 200 guests?
Kelly's Katering: y=$50x+5,000
Curt's Cuisine: y=$100x+$500
Kelly's by $5,500