OG详解-OG6 数学1 Q22

Choice D is correct. It’s given that in 2008 Zinah earned 14% more than in 2007.  Let h represent the amount Zinah earned in 2007 and let j represent the amount that Zinah earned in 2008. This situation can be represented by the equation j = (1+14100​​)h, or j=1.14h. It’s also given that in 2009 Zinah earned 4% more than in 2008. Let k represent the amount Zinah earned in 2009. This situation can be represented by the equation k =  ​(1+14100​​) j, or k=1.04j. Substituting 1.14h for j in the equation k = 1.04j  yields k = (1.04)(1.14h), or k = 1.1856h. If Zinah earned y times as much in 2009 as in 2007, then the value of y is 1.1856.
Choice A is incorrect and may result from conceptual or calculation errors.Choice B is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors.