单项选择题

If r=-2 and p＜0, which of the following has the least value

(A) 4pr²
(B) 2pr³
(C) -2pr⁴
(D) -4pr⁵
(E) -6pr⁶

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单项选择题

If Jason traveled 30 miles in 6 hours and Katie traveled three times as far in half the time, what was Katie’s average speed, in miles per hour（）

(A) 5
(B) 15
(C) 30
(D) 45
(E) 90

单项选择题

Directions for Quantitative Comparison Questions: Some of the following questions give you two quantities, one in Column A and one in Column B, Compare the two quantities and choose one of the following answer choices:（）

A．if the quantity in Column A is greater
B．if the quantity in column B is greater
C．if the two quantities are equal
D．if you cannot determine the relationship based on the given information