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For a certain type of can, the number of grams of aluminum per can decreased by 20 percent from 1994 to 1998, while the cost per gram of aluminum decreased by 60 percent. If the cost of the aluminum in $$y$$ cans in 1994 was equal to the cost of aluminum in $$ky$$ cans in 1998, then $$k$$=?
Every few years, as a reviewer, one encounters a novel whose (i)________ are so many in number, and so (ii)_______ that to correct them fully would produce a text that exceeded the novel itself in length. Faced with such a book. one wishes only to let it slip quietly to the seabed of culture, there to join thousands of other (iii)________ books in their slow disintegration
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?
For how many of the possible orderings of the 5 letters of the word "merit" is the first letter m or r ot t?
A teacher will assign a group project to 2 or more of the 4 students James, Kalla, Lomi, and Michelle. To how many different groups of students can the teacher assign the project?


In square PRSU shown, Q and T are midpoints of sides PR and SU, respectively, and the length of QS is √5. What is the area of quadrilateral PQST?

_____
Nancy invested $5,000 for $$x$$ years at an annual interest rate of 6 percent, compounded annually.

David invested $6,000 for $$y$$ years at an annual interest rate of 6 percent, compounded semiannually.

Quantity A

The total amount of interest that Nancy's investment earned

Quantity B

The total amount of interest that David's investment earned


Which of the following best represents the graph of y = |x| + x in the xy-plane?

$$0 < a < b < c$$

Quantity A

The standard deviation of the seven numbers $$-c, -b, -a, 0, a, b, c$$

Quantity B

The standard deviation of the seven numbers $$-c^{2}, -b^{2}, -a^{2}, 0, a^{2}, b^{2}, c^{2}$$




The relative frequency distributions of the values in data set A and the values in data set B are shown in the two histograms, respectively, where each interval contains values that are greater than or equal to the left endpoint and less than the right endpoint. The number of values in A is $$\frac{1}{2}$$ of the number of values in B. If data set C consists of the values in A and the values in B, which of the following histograms shows the relative frequency distribution of the values in C?

a, b, c, d, e, f, g, h, i, j

Let S be the set of all 10-letter sequences consisting of the 10 letters above.

Let T be the set of all 8-letter sequences consisting of the first 8 letters above.

Quantity A

The number of sequences in S in which f, b, h, and g appear consecutively in that order

Quantity B

The number of sequences in T in which f and b appear consecutively in that order




A town library held a reading drive, in which 20 elementary school students were asked to record the number of books they read over the summer. Only whole numbers of books were recorded. The table above shows the results of the reading drive. The average (arithmetic mean) number of books read by the students was 2 books per student.

Which of the following statements individually provide(s) sufficient additional information to conclude that only one student read only 5 books?

Indicate all such statements.
A survey of 300 travelers was taken at an airport. Of these travelers 90 percent were traveling on Airline A. Of those who were traveling on Airline A, 30 percent had first-class seats. Which of the following statements must be true about the 300 travelers?

Indicate all such statements.
If a particle travels at a constant speed of 4 centimeters per second, approximately how many hours will it take for the particle to travel 1 kilometer?
Of the 200 integers in a set, the 65th percentile is 20.

Quantity A

The arithmetic mean of the integers in the set

Quantity B

20


Quantity A

The number of different groups of 2 kittens that can be chosen from a litter of 8 kittens

Quantity B

The number of different groups of 6 puppies that can be chosen from a litter of 8 puppies


Of the 7 guests at a party, 3 are close friends of the host and 4 are acquaintances of the host. At the end of the party,the host will randomly select 2 different guests to win prizes. What is the probability that both of the prizewinners will be among the 3 close friends of the host?


In the figure shown, triangle ABC is equilateral, and arc AEC is a circular arc with center B.

Quantity A

The length of line segment AC

Quantity B

The length of line segment BE


The sequence $$a_1, a_2, a_3$$,.................$$a_n$$,............ is defined by $$a_n=\frac{5}{2^n}$$ for all positive integers $$n$$.

Quantity A

The sum of the first 15 terms of the sequence

Quantity B

5


Which of the following is equivalent to $$36^{-1}$$?

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