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One of the incongruities of modern industry, according to Reck and Graedel, is that we manufacture modern products with the most sophisticated technologies available yet generally adopt relatively ____________ approaches to recycling them.
The Federal Reserve Bank is one of the most ____________ institutions in the United States, yet many are not aware of the important operations and activities it has carried out during its lifetime.
The author mentions "studies of lake and shallow ocean sediments" primarily in order to
Which of the following best describes the function of the highlighted sentence in the context of the passage as a whole?
The passage suggests which of the following about cenotes?

Quantity A

5,555,555*777,777,777

Quantity B

7,777,777*555,555,555


What fraction of all the integers between 1 and 2,000, inclusive, are squares of an integer?

Give your answer as a fraction.
In the xy-plane, the point (t, t-1) lies on the line with equation y = $$ - \frac{1}{2}$$ x +$$\frac{1}{3}$$ . What is the value of t?

Give your answer as a fraction.
A rectangle with perimeter 60 has 2 sides of length 2x-8 and 2 sides of length x+2.

Quantity A

2x-8

Quantity B

x+2


m+n=3

Quantity A

m+5

Quantity B

8-n


x < y < 0

Quantity A

$$\frac{1}{2}(x+y)$$

Quantity B

$$\frac{1}{2}$$x + y


R is the remainder when a four-digit number is divided by a three-digit number.

Quantity A

R

Quantity B

10


The area of circular region $$C_1$$ is 4 times the area of circular region $$C_2$$.

Quantity A

The radius of $$C_1$$

Quantity B

Twice the radius of $$C_2$$


N=$$(11)^{3}(13)^{2}(15)$$

Quantity A

The greatest prime factor of N

Quantity B

15


The dollar value of a certain antique in 1980 was 20 percent greater than its dollar value in 1976. The dollar value of the antique in 1984 was 76 percent greater than its dollar value in 1976.

Quantity A

The percent increase in the dollar value of the antique from 1980 to 1984

Quantity B

56%


List A consists of r integers, and list B consists of t integers, where t= 3r. The average(arithmetic mean) of the integers in list A is 20, and the average of the integers in list B is 16.

Quantity A

The average of the r + t integers in lists A and B

Quantity B

17.5


If a+ b= c and b+ c = a, then b =
There are 6 colors available for painting a house. A combination for painting a house consists of one of the 6 colors for the trim of the house and one different color from the 6 colors for the rest of the house. How many different combinations for painting a house are available?
An alumnus contributed $50,000 to a university for research. The university deposited the money in a new account at an annual interest rate of 10 percent, compounded annually, for 2 years. If 60 percent of the interest earned from this account was then withdrawn, what was the total amount left in the account?

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