高频题讲解：SAT数学每日一练（三）

　　大家在备考SAT数学考试的时候除了要了解SAT数学考试的考点范围之外，还要注意几个备考注意事项，一是大家要读懂题意，SAT数学考试对于大家来说其实不是特别的难，但由于是英文考试可能对于题目理解有一些的误差，所以要认真审题，就可以找出考察的数学知识点。

　　二是要细心严谨，像"看对答案但选错选项、选对选项但涂错选项、简单计算出问题(比如9+2=10)、理解问题但想错问题、要求max求了min、摁错计算器"之类的，就要在平时的时候就要注意细心的问题了。

　　三是大家要做错题本，在临考的时候就可以回顾一遍错题，考试的时候就避免发生这种错误。

　　四是进行真题的模拟考试，按照模考定时训练考场状态的发挥。

　　试题分析

　　Read the following SAT test question and thenclick on a button to select your answer.

　　Karim has a $35 gift card to his favorite restaurant. The tax on his meal is 14.3%. Karim would also liketo leave a $5 tip. If c represents Karim's pretax bill, in dollars, and he wants to pay the entiremealamount, including tip and tax, using the gift card, which of the following inequalities bestmodels the situation described above?

　　A.1.143c-5≥35

　　B.1.143c+5≤35

　　C.0.143c-5≤35

　　D.0.143c+5≥35

　　答案：B

　　解析：

　　Choice B is correct. Karim's total meal cost consistsof three parts: Karim's pretax bill, the tax, and thetip, all added together. That amount will need to beless than or equal to Karim's gift card amount.

　　Since c represents the cost, in dollars, of the pretax bill, it should be multiplied by 0.143 (thetax in decimal form). Since Karim has decided to tip $5, the total meal cost can be representedby the expression space c+0.143c+5.

　　Next, combine like c terms to get 1.143c. So, the final inequality for Karim's situation is 1.143c+5≤35.　　

　　以上就是小编为大家带来的关于SAT数学要点及试题讲解，希望对大家有所帮助。更多SAT培训哪家好、SAT考试报名时间等问题可以咨询我们。