GRE
The average (arithmetic mean) of x+y and x-y
x
$$(5^{t})(5^{t})$$
$$5^{t^{2}}$$
$$3^{-2}$$
0.1
m+r
q+s
a
b
The number of employees at the company on January 1, 2006
0.85k
The area of the region enclosed by the pentagon shown
$$\frac{7}{2}S$$
The actual area of region X
150 square kilometers
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