一道SAT数学题及解析.

　　下面是一道SAT数学题及其答案解析的相关内容，是关于代数方面的。SAT数学题的难度对于中国内地的考生来说不是很大，但是还是需要大家经过一段时间的练习才能掌握。下面就一起来看看这道SAT数学题的解法，有哪些特别之处吧。

　　The projected sales volume of a video game cartridge is given by the function where is the number of cartridges sold, in thousands; is the price per cartridge, in dollars; and is a constant. If according to the projections, cartridges are sold at per cartridge, how many cartridges will be sold at per cartridge?

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is C

　　Explanation

　　Difficulty: Medium

　　For cartridges sold at per cartridge, (since is the number of cartridges sold, in thousands) and . Substituting into the equation yields

.

　　Solving this equation for yields

.

　　Sinceis a constant, the function can be written as . To determine how many cartridges will be sold at per cartridge, you need to evaluate . Since is given in thousands, there will be cartridges sold at per cartridge.

　　以上就是关于这道SAT数学题及解析的详细内容，都是以SAT数学考试常见的出题方式进行的，非常实用。大家在备考SAT数学题的时候，一定要记得掌握SAT数学题的出题方式，这样才能更快更好的解答SAT数学题。

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