Data and Probability
Find the mean and median of the following data set
3, 5, 8, 6, 2, 4, 8
What is
Mean = 5.14
Median = 5
x2 * x3
What is x5
Factor completely
x2 - 16
What is (x - 4)(x + 4)
y = 12(3)x
Give the starting value
12
The solutions of x2 - x - 20 = 0
What are x = -4 and x = 5
You are picking markers out of a bag with 4 blue, 2 red, 4 green, and 5 yellow markers, replacing the markers each time. Find the probability that you pick a blue marker and a yellow marker.
What is P(blue and yellow) = 5/49
x^6/x^4
x2
Factor completely
x2 - 12x + 27
What is (x - 9)(x - 3)
Write an equation to represent when you invest $500 at 3% interest compounded yearly, in terms of t.
What is 500(1.03)t?
The vertex of y=(x - 4)2 + 8
What is (4, 8)
The function y = 2(1.08)t represents a bacterial population y, over t minutes. Predict the number of bacteria after 50 minutes.
What is 93.8 bacteria?
(25x^-3)/(5x^2)
What is
5/(x^5)
Factor
8x^3-2x^2+12x-3
What is
(2x^2+3)(4x-1)
The b for y = a(b)x for a
$30,000 car, which depreciates 12% a year for 5 years.
What is .88?
Solve the following equation
f(x)= 10x2 - 21x + 9
What is x = 3/2 and x = 3/5?
John is eating chips out of a bag. The number of chips in the bag, y, over x minutes is represented by the equation y = 253 - 12.2x. What is the meaning of the -12.2 in the context of the question?
What is he eats an average of 12.2 chips every 1 minute?
(6(m^2n^4)^2)/(2(m^3n^-2)^-3)
What is 3m10n2
Factor completely
(12x3 - 75x)
What is
3x(2x+ 5)(2x-5)
You invest $1000 at 4% interest compounded yearly. How much do you have after 5 years?
What is $1216.65
Give axis of symmetry and vertex for
y = x2 + 4x - 5
What is x=-2, (-2, -9)
The function y = 23.5 + 8.7x represents a student's score on the final exam, y, compared to the hours they spent preparing, x.
Predict the score for a student who spends 8 hours preparing.
That student actually got a 92%. Calculate and interpret their residual.
What is 93.1%, r = -1.1, the student actually scored 1.1% lower than was predicted?
((7x^-3y^-5)^0)/(2x^-3y^6)
What is
x^3/(2y^6)
Factor completely
70x5 - 12x4 - 16x3
What is 2x3(5x+2)(7x-4) ?
A car loses 20% of its value each year.
State the value of a $40,000 car after 3 years.
What is $20,480?
Solve, round to the nearest hundredth
y=4x^2-5x-10
What is x = -1.07, 2.32?