涛涛版31套~ Q27: For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2r dollars for each additional hour or fraction of an hour, where r > 100. Did a particular landscaping job take more than 10 hours? (1) The contractor charged a total of $288 for the job. (2) The contractor charged a total of 2.4r dollars for the job. ---------------------------------------------------------------------------------------------------------------------- Answer: B Q28: In the rectangular coordinate system, points (4, 0) and (– 4, 0) both lie on circle C. What is the maximum possible value of the radius of C ? A. 2 B. 4 C. 8 D. 16 E. There is no finite maximum value. ---------------------------------------------------------------------------------------------------------------------- Answer: E Q30: A train traveled from station X to station Y at a constant speed of 88 feet per second. Is the distance that the train traveled from station X to Station Y greater than 40 miles? (1 mile = 5,280 feet) (1) It took less than 45 minutes for the train to travel from station X to Station Y. (2) It took more than 42 minutes for the train to travel from station X to Station Y. ---------------------------------------------------------------------------------------------------------------------- Answer: B Answer: B 谢谢~ --

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