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Each day for 25 days, the number of people who used a certain library that day was recorded. The standard deviation of the 25 recorded numbers is 12.

Which of the following statements individually provide(s) sufficient additional information to determine the mean of the 25 recorded numbers?

Indicate all such statements.


The graph shows for each movie category the percent of a sample of middle school students who had watched at least one movie in that category within the last year. If 87 percent of the students in the sample had watched at least one movie in the comedy category and at least one movie in the drama category, what percent of the students in the sample had not watched any movies in either of these two categories?
The sum of two numbers divided by 2, gives a result of 24 and their difference divided by 2 gives a result of 17. The product of these two numbers is divisible by which of the following?
In the xy-plane, which of the following values are x-intercepts of the graph of the equation $$y= \frac{x−1}{x+3}$$?

Indicate all such values.
$$P$$, $$Q$$, and $$R$$ are consecutive multiples of 3, and $$P \lt Q \lt R.$$

Quantity A

$$P+Q+3$$

Quantity B

$$Q+R-3$$




Each of the thirteen marked points is either the center of one of the six circles or a point shared by two tangent circles. Each circle has a radius of r inches, and the rectangular region ABCD has a perimeter of x inches and an area of x square inches. What is the value of r?


Each of the shaded regions in the figure is a sector of a circle with radius 2.

Quantity A

The sum of the areas of the three shaded regions

Quantity B


Quantity A

The number of different 2-member subsets of a set of 5 members

Quantity B

The number of different 3-member subsets of a set of 5 members


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


In the rectangular coordinate system, the vertices R, S, and T of triangle RST have coordinates (3, 1), (3, 7), and (k, 4), respectively. If k > 3 which of the following must be true?
The probability is 0.70 that event E occurs, 0.40 that event F occurs, and 0.30 that both events occur.

Quantity A

The probability that neither event E nor event F occur

Quantity B

0.20


A large pump and a small pump are available to fill a public fountain with 7,500 gallons of water. The pumps can be used alone or simultaneously. Working alone at their respective constant rates, the small pump would take 1.6 times as long as the large pump to fill the fountain. Working simultaneously at their respective constant rates, the two pumps would take 3 hours to fill the fountain. How long would the small pump take to fill the fountain, working alone at its constant rate?
In the xy-plane, circle C is centered at (0, 3) and passes through the point (2, 0).

Quantity A

The area of circle C

Quantity B

13π


Pam, Steve,and Adrian each had a party. The number of people at Pam's party was 6 more than the number of people at Steve's party. The number of people at Steve's party was 8 fewer than the number of people at Adrian's party. No one attended more than one of the three parties. If the total number of people at the three parties was 89, what was the number of people at Adrian's party?
A certain triangle has sides of lengths 5, 12, and $$x$$. Which of the following could be the value of x?

Indicate all such values.


The diameter of the circle centered at O is $$d$$.

Quantity A

The perimeter of triangle AOB

Quantity B

$$\frac{5d}{3}$$


For which of the following values of $$x$$ does the expression $$\sqrt{\frac{24}{x+1}}$$ represent an irrational number?
The passage suggests which of the following about the number of people living in towns in England during the fourteenth century?
Of the 29 students in a class, 15 students study French, fewer than 16 students study Spanish, and 5 students study neither French nor Spanish. Which of the following could be the number of students in the class who study both French and Spanish?

Indicate all such numbers.
The prizes for a certain contest are in 5 sealed envelopes: 2 containing cash and the other 3 containing gift certificates. If 2 envelopes are to be randomly selected from the 5 envelopes, one at a time without replacement, what is the probability that at least one of the envelopes selected will contain a cash prize?

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