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Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
F ( t ) =0.95^ ( t/2 )
The function F ( t ) gives the percentage, as a decimal, 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.
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