The value of the Conference Board Index of 10 economic indicators in the U.S. could be approximated by the function of time t in months since the end of December 2002.
?
?
Use the model to estimate when - prior to March, 2004 - the index was 113.
?
A. 
months
B. 
months
C. 
months
D. 
months
E. 
months
Answer: B
Mathematics
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