下面是为大家准备的2013年9月1日—9月4日的4道SAT考试数学选择题练习题。同学们在备考SAT数学的过程中，一定要加强习题的练习，熟练到能充分理解题意，争取得到满分。

　　1.

　　The functionis graphed in theabove. If the functionis defined by, for how many values ofbetweenanddoesequal?

　　(A) None

　　(B) One

　　(C) Two

　　(D) Three

　　(E) More than three

　　2.If the function is defined by , and if , what is the value of ? 

　　(A) 

　　(B) 

　　(C) 

　　(D) 

　　(E) 

　　3.On the last day of a one-week sale, customers numberedthroughwere waited on. How many customers were waited on that day?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　4.There arestudents in a biology class, and onlyof them are seniors. Ifjuniors are added to the class, how many students in the class will not be seniors?

　　(A) 

　　(B) 

　　(C) 

　　(D) 

　　(E) 

　　参考答案及解析：

　　1.The correct answer is C

　　Explanation

　　The graph of the functionis the same as the graph of the functiontranslated upunits. The functionintersects thethree times, but if the graph is shifted upunits, then the graph will intersect theonly twice. Therefore,is equal tofor exactly two values ofbetweenand.

　　2.The correct answer is A

　　Explanation

　　If the functionis defined by, and, then. Therefore,.

　　3.The correct answer is C

　　Explanation

　　The number of customers who were waited on that day is, as the total number of customers is those customers numberedtoinclusive.

　　4.The correct answer is D

　　Explanation

　　At first, there arestudents in the class, andof them are seniors. It follows that initiallystudents are not seniors. Ifjuniors are added to the class, there will be, or, students in the class who are not seniors.

　　以上就是关于4道SAT考试数学选择题练习题及其答案和解析，非常详细。同学们在备考阶段，一定要加强习题的练习以及题意的理解，争取SAT数学满分。