SAT数学考试,小伙伴们有没有每天坚持每天练习呢。下面和小编一起来做做吧。
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.
SAT数学每日一练推荐词汇
context['kɔntekst]n. 上下文,环境,背景
interpretation[in.tə:pri'teiʃən]n. 解释,阐释,翻译,(艺术的)演绎
option['ɔpʃən]n. 选择权,可选物,优先购买权 v. 给予
function['fʌŋkʃən]n. 功能,函数,职务,重大聚会 vi. 运行
multiple['mʌltipl]adj. 许多,多种多样的 n. 倍数,并联
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