The table shows the monthly revenue y (in thousands of dollars) of a landscaping business for each month of the year 2008, with x = 1 representing January.
?
x y 1 6.0 26.1 37.1 49.2 5 12.3 6 16.4 7 12.2 8 10.2 9 8.3 10 6.3 11 4.3 12 2.4 ?
A mathematical model that represents these data is:
?
?
Find f (1) and f (12).
?
A. 
B. 
C. ?
D. 
E. 
Answer: C
Mathematics
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= 
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C. 
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