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x,12,11

If the standard deviation of the three numbers in the list above is 4, what is the standard deviation of x+9, 21, and 20 ?
According to a projection made in January 2016, for each of the three years following 2015, annual sales would increase by an amount equal to $$\frac{1}{2}$$ of the increase in annual sales from 2014 to 2015. According to this projection, approximately what would annual sales be for the year 2018 ?
Based on the information given, which of the following statements are true?

Indicate all such statements.
The number of stores owned by Star Discount in 2015 was twice the number owned by Star Discount in 2010. By approximately what percent did the average annual earnings per store increase from 2010 to 2015 ?
In a certain list of positive integers, the ratio of the number of odd integers to the number of even integers is 7 to 4. One-fourth of the number of odd integers is what fraction of the total number of integers in the list?
If the circumference of a circle is 6, what is the area of the circle?
In the xy-plane, the graph of the equation y=$$-\frac{1}{2}x+3$$ passes through the point (c,-c). What is the value of c ?
On a final exam, 75 percent of a class had scores that were greater than 70, and 60 percent of the class had scores that were less than 85. What percent of the class had scores that were greater than 70 but less than 85 ?

_____%


The area of the shaded region inside rectangle RSTW is 28.

Quantity A

The sum of the areas of the unshaded regions inside rectangle RSTW

Quantity B

42


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List K consists of 10 numbers whose standard deviation is 7.

List M is formed by adding 3 to each number in list K.

Quantity A

The standard deviation of the numbers in list M

Quantity B

7


At a community college, 36 students are enrolled in a psychology class and 28 students are enrolled in a statistics class. Of the students enrolled in the psychology class, 17 are also enrolled in the statistics class.

Quantity A

The number of students at the college who are enrolled in only one of the two classes

Quantity B

30


x < 8

Quantity A

|x|

Quantity B

9




Quantity A

x

Quantity B

y


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0 < p < 1

n is a positive integer.

Quantity A

$$p^{n}$$

Quantity B

$$p^{-n}$$




According to the graph, the kiosks of which of the following two types combined account for $$\frac{6}{25}$$ of all the kiosks?
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0.4, 0.8, 1.2, 2.0, y

If the average (arithmetic mean) of the 5 numbers in the list above is 1.0, what is the value of y ?
In a certain sequence of numbers, each term after the first term is found by multiplying the preceding term by 3 and then subtracting 2 from the product. If the third term of the sequence is 55, what is the first term of the sequence?
Points P, Q, and R lie on a line, and point Q is between point P and point R. The length of line segment PQ is 5. Which of the following could be the length of line segment PR ?

Indicate all such lengths.

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