GRE
The perimeter of quadrilateral ABCD
$$\frac{9}{2}$$
The percent increase from 1998 to 2000 in the yearly expenses to run the business
5%
The median value for the combined sample of the 16 numbers
51
$$\frac{x^{3}}{9}$$
$$(\frac{x}{9})^{3}$$
The average (arithmetic mean) of the numbers x, -x, and |x|
x
a
7
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