GRE
The total cost of the gasoline used on the trip for car A
The total cost of the gasoline used on the trip for car B
$$(\frac{1}{5})^{-k}$$
$$(\frac{1}{2})^{-2k}$$
The length of $$BC$$
$$8$$
$$x$$
$$y$$
The fraction of the employees in the company who are women college graduate
$$\frac{1}{6}$$
$$n^2-5n+4$$
$$n^2-6n+9$$
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