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题目内容
For which of the following values of x is the units digit of the product $$(2)(3^{x})$$ equal to 4?
If $$\frac{3x}{2}=\frac{5}{7y}$$ and $$\frac{3y}{5}=\frac{a}{x}$$,what is the value of a ?
Give your answer as a fraction.
Of the total number of students enrolled at University U in the fallof 2008, $$\frac{3}{8}$$ were sophomores and $$\frac{1}{50}$$ were biology majors. Which of the following could be the total number of students enrolled at University U in the fall of 2008 ?
Indicate all such numbers.

The figure above represents a semicircular garden that is enclosed by 20 feet of fencing and a straight garden wall. What is the area, in square feet, of the garden?
The average (arithmetic mean)of x and z is greater than y, and x < y < z.

Quantity A

The average of x, y, and z

Quantity B

The median of x, y, and z


Quantity A

The least integer x that satisfies the inequality $$x^{3}$$ > - 30

Quantity B

-3



The dotted line segments separate the rectangular region into six identical smaller rectangular regions.

Quantity A

The area of triangular region WXV

Quantity B

The area of triangular region XYV


a≠0

Quantity A

a+1

Quantity B

(1/a)-1



Square FGHJ has sides of length x. Region FOJ is a sector of the circle with center F.

Quantity A

The area of the shaded region

Quantity B

$$\frac{x^{2}}{4}$$


Atotal of 1 ,500 boxes are stored in four warehouses. The number of boxes stored in the individual warehouses are x, y, z, and w, respectively, where w= 2x and z= 2y.

Quantity A

x+y

Quantity B

500



In the xy -plane, line segment RS is one of the sides of square RSTU (not shown).

Quantity A

The area of square RSTU

Quantity B

13


In the xy-plane, a line with equation y = mc + b,where m and b are constants and mb≠0, has a y-intercept that is twice the x-intercept.

Quantity A

m

Quantity B

-2


n is a positive integer.

Quantity A

$$\frac{1}{3^{n}}$$

Quantity B

$$3(\frac{1}{4^{n}})$$



Quantity A

PS

Quantity B

RS


In a certain club, the average (arithmetic mean) age ofthe 35 males is 24.2 years and the average age of the 25 females is 27.6 years.

Quantity A

The average age of all of the people in the club

Quantity B

25.9


Point O is the center of a circle with circumference 12.
Point P is another point inside the circle.

Quantity A

The greatest distance from P to a point on the circle plus the least distance from P to a point on the circle

Quantity B

4


xy > 0

Quantity A

$$x^{4}y^{3}$$

Quantity B

0



If 00

Quantity A

A(a,b)+A(b,c)

Quantity B

A(a,c)


In the xy-plane, C and D are circles centered at the origin with radii $$\sqrt{17}$$ and $$\sqrt{5}$$, respectively.

Quantity A

The number of points (a, b) on circle C where both a and b are integers

Quantity B

The number of points (a, b) on circle D where both a and b are integers


In a distribution of the values of the variable x, the 50th percentile is 48.5 and the 60th percentile is 56.5.

Quantity A

The 40th percentile of the distribution of the values of x

Quantity B

40.5


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