Q35 the operation is defined by the equation x y x

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Q35: The operation ○ is defined by the equation x ○ y = (x-y)/(x+y), where y ≠ -x. If 3 ○ y = 5 ○ 4, then y = A. 1/9 B. 4/15 C. 5/12 D. 12/5 E. 15/4 Answer: ------------------------------------------------------------------------------------------------------------ Q36: In the xy -plane, line l and line k intersect at the point (16/5, 12/5). What is the slope of line l ? (1) The product of the slopes of line l and line k is –1. (2) Line k passes through the origin. 11
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------------------------------------------------------------------------------------------------------------ Q37: Of the families in City X in 1994, 40 percent owned a personal computer. The number of families in City X owning a computer in 1998 was 30 percent greater than it was in 1994, and the total number of families in City X was 4 percent greater in 1998 than it was in 1994. What percent of the families in City X owned a personal computer in 1998? ------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------ 12
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