#### 题目列表

If $\frac{1}{2}$ of the revenue from the sale of jazz recordings was from the sale of vocal jazz recordings, then revenue from vocal jazz recordings was approximately what fraction of revenue from all vocal recordings? At a certain high school, 90 percent of seniors who take physics also take calculus and 60 percent of seniors who take calculus also take physics. If 30 percent of seniors at the school take physics, what percent of seniors take calculus?

_____%
Which of the following points lies between the y-intercepts of the two lines 3x+2y = 3 and x- 2y=-1?
What is the ratio of the product (20!) (16!) to the product (22!) (14!) ?

The graphs above show the distribution of men, women, and children who visited a certain zoo in 2008 and 2009. Which of the following statements must be true?

Indicate all such statements. In the xy-plane, parabola P is the graph of $y = mx^{2}$, where m is a constant, and parabola Q is the graph of $y = kx^{2}$, where k is a constant.

m

#### Quantity B

k #### Quantity A

In the xy-plane, the x-intercept of the line determined by the equation y=x+1

#### Quantity B

0

x > 0 and $\frac{5}{27}x^{2}=x$

x

#### Quantity B

5

In a study of the size of frogs, group I consists of five frogs whose average (arithmetic mean) length is 4.7 centimeters. Group II consists of five frogs whose lengths are 4.3, 4.6, 4.7, 4.8, and 5.1 centimeters.

#### Quantity A

The standard deviation of the lengths of the five frogs in group I

#### Quantity B

The standard deviation of the lengths of the five frogs in group II

3x+2y=8

x and y are integers and x > y.

3x+4y

#### Quantity B

8

x is an integer, and $\frac{1}{9}$ < $3^{x}$ < 90.

#### Quantity A

The number of possible values of x

#### Quantity B

6

The graph above shows the distribution of tickets sold at a local movie theater last Saturday, by type of ticket.

Which of the following statements individually provide(s) sufficient additional information to determine the total number of tickets sold at the theater last Saturday?

Indicate all such statements. The area of a circle with radius c is less than the area of a square with sides of length kc. Which of the following could be the value of k?

Indicate all such values.

Of the employees in the 2001 workforce who were hired in 1997, 40 percent were hired to fill positions in a new subdivision of Company I. Approximately how many of the employees in the 2001 workforce were hired in 1997 to fill positions in the new subdivision? If the ratio of the number of employees in the 2001 workforce who were hired in 1996 to the total number of employees hired in 1996 was 2 to 3, approximately what was the total number of employees hired in 1996? In the 2001 workforce, the average (arithmetic mean) salary of the employees hired prior to 1999 was $39,900, and the average salary of the employees hired in 1999 and 2000 was$30,100. Which of the following is closest to the average salary of all employees in the 2001 workforce? In the figure above, what is the sum of a and b?

a+b=_____ In the figure, point O is the center of the circle of radius r. If the length of arc PQR is $\frac{\pi}{2}$, and the area of the shaded region is $\frac{5\pi}{4}$, what is the value of r? The average (arithmetic mean) monthly sales at a certain company for the past k months was m dollars. Which of the following expressions represents the sales, in dollars, for the current month if the average monthly sales for the k + 1 months will be 10 percent greater than the average monthly sales for the k months?
x > 0

0.0625y=$\frac{x}{4}$(2.5)

x

y

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