Algebra
Pre Calc
Calc
Stat
Random holiday knowledge
100

Find a number such that when 5 is subtracted from 5 times that number, the result is 4, more than twice the number.

Let us consider the number as ‘x’
Then, five times the number will be 5x

And, two times, the number will be 2x
So,
5x – 5 = 2x + 4
5x – 2x = 5 + 4
3x = 9
x = 9/3 = 3

x=3

100

for p(x) = -x(x-4)(x+2), on what interval is p(x) >= 0?


.

[-2,0] U [4,∞)

100

A particle is moving such that its position, in feet, is modeled by s = (2t2 +1)8 where t is in seconds. Find the velocity and acceleration of the particle at t = 0. indicating units of measure.

v(t) = 8(2t2 + 1)7 (4t)

v(t) = 32t(2t2 + 1)7

v(o) = 0 ft/sec

a(t) = (32)(2t2 +1)7 + (32t) (7(2t2 +1)6 (4t))

a(0) = 32 ft/sec2

100

Given a population can be approximated using N(185,15), what is the z-score for 170?

-1

100

Finish the sentence: "Tell me baby, do you recognize me?...

Well, its been a year, it doesn't surprise me


Last Christmas

200

Solve the system of equations:

y=-3x+4

x+4y=-6

x=2

y=-2

200

Evaluate log4(1/64)

x=-3

200

∫1/x2 dx = 

-x-1 + c

200

Occurs when 2 variables are associated in such a way that their effects on a response between the groups in an experiment is too large to be explained by chance variation in the random assignment

Confounding

200

What’s the best-selling Christmas movie of all time?

Home Alone.

300

Factor this equation completely:

6×3- 4×2 – 16x

2x(3x + 4)(x – 2)

300

Simplify 3sin2x - 3

-3cos2x

300

determine the points of inflection for f(x) = x5 - 5x4 + x.

Inflection at x=3 cuz f'' changes sign

300

The correlation between 2 quantitative variables X and Y is known to be  = 0.55. If we double each X, decrease Y by 12, and switch the axes, the new correlation would be...

0.55

300

How many reindeer does Santa have and you must name all of them

9 reindeer  - Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, Blitzen, and Rudolph.

400

Find the vertical asymptotes of the function.

y=    x2-36

       --------------

        x2-8x+15

x = 3 and x = 5

400

Solve for all x on the interval  

45 degrees and 135 degrees

400

evaluate arcsin(-1/2)

-π/6

400

Suppose a data set (weight vs height) of 250 adult women has a correlation of r = 0.6. If the woman is at the 84th percentile among women for height, then her predicted weight would be approximately what percentile? 

73rd percentile

400

What U.S. state is home to the town of Santa Claus?

Indiana

500

What is the domain of the function f(x) = 2x – 4?

All real numbers

500

Given the equation , what is one possible value of  ?


120 degrees or 240 degrees

500

The intermediate value theorem states that suppose f is a continuous function on the closed interval from [a,b]. For any number k between f(a) and f(b), there exists a point c between a and b such that _______

f(c) = k

500

There are 18 boys and 12 girls in a class. There are 13 boys who like cookies and 10 girls who don't like cookies. What is the probability of randomly selecting a student who is a boy or a student who likes cookies but NOT both? Answer in a fraction

15/30

500

In Elf, what department store does Buddy get a job at?

Gimbels