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Factoring
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Formulas
100

What is the mean of 2,5,6,7,6, and 10?

6

100

If I roll a die, then what is the probability I will roll a number less than 3?

1/3

100

True or False

(x-y)(x-y) = x2 - 2xy + y2

True

100

If f(x) = 3x2 + 10, then what is f(2)?

22

100

In the formula A = πr2, if the radius doubles, then what happens to the area?

Quadruples

200

If x and y have a direct relationship and I double x, then what will happen to y?

It will double.

200

If you flip a coin 3 times, then what is the probability of getting tails all three times?

1/8

200

What are the solutions to x2 + 5x - 6 = 0

-6 & 1

200

The function f(x) = x2 is a parabola through the origin. Describe the appearance of f(x) = x2 - 3.

Slide down y-axis three units.

200

If a recipe calls for 1 cup of water for every 1/3 cup of flour, then how much flour do I need if I use 14 cups of water?

4 and 2/3

300

How do you find the median of a group if there is an even number of items in the group?

Take the two in the middle, and average them.

300

If I have 3 white, 2 black, and 5 blue socks in a drawer, then what is the probability that I'll randomly select a sock that is not white?

7/10

300

Find the polynomial for (x + 2)(x + 7)

Hint: FOIL

x2 + 9x + 14

300

If f(x) = 2(x + 3)2 - 3x -5, 


then f(0)=

13

300

What is the formula for average?

average = total / # of things

400
If x and y are directly proportional, and x = 3 when y = 5, then what is the value of y when x = 60?

y = 100

400

If I have 20 numbered balls, then what is the probability that I'll select the number 5 and then 17?

1/380

400

Factor x2 + 2x - 15

(x + 5)(x - 3)

400

If f(x) = 12 - 3(x + 4)  = 15,


then what is x? 

-5

400

Using the formula F = (9/5)C + 32, if the temperature of boiling water is 212°F, then what is the temperature in degrees Celsius?

100°C

500

In the equation x = 6 / y, what happens to y when x is tripled?

y is divided by 3

500

If in a lottery there are 10 prizes and 25 blanks, then what is the probability of getting a prize?

2/7

500

What is the polynomial for (x + 6)(x - 2)

x2 + 4x -12

500

Describe x- and y- intercepts and their relation.

Where x intercepts y = 0

 and where y intercepts x = 0

500

What is the Pythagorean theorem formula and what is it used for?

a2 + b2 = c2

Used the find the side lengths of right triangles.