GRE
The average number of seconds per step that Magdalena took to complete the remaining 30 steps
80
$$x^{2} - y^{2}$$
5
m + n
2m
The total number of points P in the xy-plane such that the distance between P and one of the axes is 10 and the distance between P and the other axis is 8
The total number of points Q in the xy-plane such that the distance between Q and one of the axes is 5 and the distance between Q and the other axis is 4
The area of a square region with diagonal of length $$\sqrt{2}x$$
The area of a circular region with diameter of length x
The 40th percentile of the distribution of the values of x
40.5
The number of positive factors of $$pr^{2}$$
The number of positive factors of $$(p+3)(r+3)$$
$$QR$$
$$RS$$
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