#### 题目列表

Which of the following is equal to $(3x^{2}+5x-4)-2(x^{2}+2x+1)$ for all values of x?
What is the measure of an interior angle of a regular polygon with 5 sides?

As part of a study, a restaurant recorded the number of people for each reservationi at the restaurant last Saturday. The table above shows a frequency distribution of the results. What is the range of the numbers of people oer reservation?

_____people per reservation
Which of the following is closest to the number of members of the 105th Congress who had military experience?
What is the least possible number of male members of the Senate in the 105th Congress who had prior election experience?
Based on the information given, which of the following statements about the members of the 105th Congress must be true?

Indicate all such statements.

What is the area of the shaded region shown in the xy-plane?

The variable x takes on integer values between 1 and 8, inclusive. The frequency distribution of x is shown in the graph above. What is the median value of x?
$a_{1}$, $a_{2}$, $a_{3}$, ......, $a_{n}$, ......

The sequence of numbers shown is defined by $a_{1}$=4, $a_{2}$=5, and $a_{n}$=2$a_{n-1}$+$a_{n-2}$ for all integers greater than 2. Which of the following is a number in the sequence?
In the xy -plane, the graphs of the equations 2x -y = 4 and 3x+y =11 intersect at point (a, b).

a

b

#### Quantity A

The area of a rectangular region that has a perimeter of 20 inches

#### Quantity B

20 square inches

$x^{-2}=4$

|x|

#### Quantity B

$x^{2}$

x and y are integers.

4 ≤ x ≤ 13

4 ≤ y ≤ 13

#### Quantity A

The least possible value of $\frac{3x-4}{y+7}$

#### Quantity B

$\frac{2}{5}$

The sum of the x positive measurements in list A is equal to the sum of the y positive measurements in list B. The average (arithmetic mean) of the x measurements in list A is greater than the average of the y measurements in list B.

x

#### Quantity B

y

Three machines, working independently, can make a production lot of widgets in 4, 6, and 8 hours, respectively. If the machines work simultaneously at their respective uniform rates to make a single lot, what fraction of the lot will be made by the fastest machine?
If x and y are positive integers and x + y = 8x + 22, which of the following must be true?
At a constant rate of $\frac{x}{6}$ miles for every y seconds, how many minutes would it take an aireraf to travel z miles? (xyz ≠ 0)
Sam purchased two pictures from an artist and sold each of them for \$540. If Sam sold one of the pictures for 20 percent more than he paid for it and sold the other picture for 10 percent less than he paid for it, what was Sam's total profit on the two pictures?
For which of the first five years shown was the total annual per capita consumption of coffee and ice cream combined closest to the annual per capita consumption of poultry?
The population of the United States was approximately 106 million in 1920 and approximately 249 million in 1990. Based on these population estimates, approximately how many million pounds greater was the total annual consumption of cheese in 1990 than in 1920?

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