Algebra
Functions
Trigonometry
It's a Surprise!
Statistics & Probability
100
This is the correct expansion of (ax)2.
What is a2x2?
100
This is equal to e0.
What is 1?
100
This is 270º in radians.
What is 3π/2?
100

This is the formula for the standardized normal variable:

What is z = (x - M) / sigma

100
When this happens, the denominators on a tree diagram decrease from left to right.
What is "without replacement."
200

This is the common ratio for the situation: A herd of kangaroos decreases by 5% per year.

What is 0.95? (1 - .05 = .95 - if they said increase it would have been 1.05)

200

You do these two things when you see a quadratic that you need to solve.

What is: 1) get it equal to zero, and 2) factor.

200
You use this trig rule when two sides and two angles are involved.
What is the sine rule?
200

cos2 pi + sin2 pi equals this:

What is 1?

200
This is the interquartile range.
What is Q3 - Q1?
300
This is the 4th row of Pascal's triangle.
What is 1, 4, 6, 4, 1?
300
To find this, swap x and y and solve for y.
What is the inverse function?
300

The area of a sector is 63.617 and it's angle is pi/2. Find it's radius.

What is 9?

300

Mrs. Erickson's kids are this many years old.

What is 8 and 4.

300

To input grouped data into the calculator, you have to do this first to get L1.

When do you find the mid-interval value? E.g. 5 ≤ x < 10: mid-interval = (5 + 10)/2 = 7.5

400

Solve: log4(x - 3) = 3

What is 67?

400
This is the resulting transformation of f(-x).
What is horizontal reflection?
400
For this trig identity, you pick which alternate form to use based on what you already know or what else you have.
What is cos 2x? Ex.: sin x = 3/5. Find cos 2x: cos 2x = 1 - 2sin2 x cos 2x = 1 - 2s2 cos 2x = 1 - (3/5)2 cos 2x = 1 - 9/25 cos 2x = 16/25
400

This is the word IB uses for slope:

What is gradient?

400
These are situations where there are only two options (yes/no, heads/tails).
What is binomial probability?
500

This is the 5th term in the expansion of (2x - y)12 ?

What is 126,720x8y?

500
These are the three different scenarios involving discriminant and roots.
What are: 1) b2 - 4ac < 0 - 0 roots 2) b2 - 4ac = 0 - 1 root 3) b2 - 4ac > 0 - 2 roots
500
This is the mode your angles should be in for the "easy" arc length and sector area formulas.
What are radians?
500

This is the same as sin(150 degrees).

What is 1/2?

500
These are the percents for the first, second and third standard deviations.
What are 68%, 95% and 99.7%?
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