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题目内容
In the xy-plane, lines l and m, with equations y+x+r=0 and y-x+s=0, respectively, intersect at the point (1, 2).

Quantity A

r+s

Quantity B

0
$$\frac{x}{x-2}$$=$$\frac{x-1}{x+1}$$

Quantity A

x

Quantity B

1

Quantity A

The area of a rectangle with a perimeter of 32

Quantity B

The area of a rectangle with a perimeter of 52
Amy wants to build a fence around her level, circular garden. If the maximum distance between any two points in the garden is 6 feet, what length of fence, in feet, will form the border of the garden?
Solution A contains x percent alcohol by volume. Solution B contains y percent alcohol by volume. If 3 liters of solution A are mixed with 5 liters of solution B to yield 8 liters of solution C, what percent of the volume of solution C is alcohol?
If $$8^{x}=16$$, then $$x$$=
z > 0

Quantity A

20% of z

Quantity B

10% of 2z
Of Amy`s four sisters, two are taller than Amy and two are shorter than Amy.

Quantity A

The average (arithmetic mean) height of Amy`s four sisters

Quantity B

Amy`s height


Quantity A

The length of line segment DF

Quantity B

12

Quantity A

$$((\frac{1}{10})^{10})^{10}$$

Quantity B

$$\frac{1}{10^{(10^{10})}}$$


A researcher recorded the amount of time, rounded to the nearest second, that it took each of 14 people to complete a certain task. The recorded times are summarized in the boxplot shown. Which of the following statements must be true?

Indicate all such statements.


The scatterplot shows the amount of time, in minutes, that it took a team of two people to mow each of 10 lawns, including a lawn with area 4,100 square feet. Also shown is a trend line that is used to predict the amount of time, in minutes, that it will take the team to mow a lawn based on its area. The amount of time that it took the team to mow the lawn with area 4,100 square feet is approximately what percent less than the amount of time predicted by the trend line?
Approximately how many days will it take for a space vehicle to travel $$5.5(10^{7})$$ kilometers at an average speed of 10 kilometers per second?
The integers a, b, and c are positive, and a > b > c. When a, b, and c are divided by 3, the remainder are 0, 1, and 1, respectively.

Quantity A

The remainder when a+b is divided by 3

Quantity B

The remainder when a-c is divided by 3
$$x^{2}y > 0$$

$$x^{4}y^{2} – x^{4}y < 0$$

Quantity A

y

Quantity B

1
In the sequence of numbers, each number after the first numbers is $$\frac{1}{3}$$ of the preceding number. T is the least number in the sequence that has a value greater than 1.

999, 333, 111, ......

Quantity A

T

Quantity B

3
If k, n, and $$\frac{k}{n}$$ are integers greater than 1, which of the following could be the value of kn?
All of the codes used to unlock a certain type of jewelry box are different arrangements of the letters iin the name "MARSHA," where both the first and last letters in each code are "A"s. How many such 6-letter codes are possible?
The function f is defined by f(x)=|x-a|-|b-x| for all numbers x, where a and b are positive costants. What is the value of f(-4)?

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