[官方出品]SAT数学练习题daily practice（2018年4月13日）

小站整理2018-04-13 18:35:21

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摘要：5月SAT考试已临近。由SAT考试官方出品(SAT daily practice)，每天一道权威SAT数学练习题，在苦刷SAT真题之余，是保持备考状态并适当放松身心的绝佳调剂资料。众SATer可善用，本文为2018年4月13日SAT数学每日一练，考察对对幂函数的理解。

为广大SATer带来2018年4月13日的SAT数学每日一练，考察对幂函数的理解，配有答案，解析，众考生，慢慢操练吧。5月SAT考试加油!

4月13日SAT语法每日一练

F(t)=0.95^(t/2)

The function F(t) gives the percentage, as adecimal, of information Dianna remembered t days after memorizing lines for a play. Assuming she did not work on her lines again, what is the best interpretation of the meaning of the function F in this context?

A.On any given day, Dianna will forget 95% of the lines 1 day after she memorizes them.

B.On any given day, Dianna will forget 95% of the lines 2 days after she memorizes them.

C.On any given day, Dianna will remember 95% of the lines 1 day after she memorizes them.

D.On any given day, Dianna will remember 95% of the lines 2 days after she memorizes them.

答案：D

解析：

Option D is correct. After 2 days, the exponent of the function will be 2/2=1. Dianna will remember (0.95^1)*100 or 95% of the lines.