The circulation M, in thousands, of a certain magazine t years after 2010 is given by
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This formula is valid over the period from 2010 to 2015 only.A: Make a graph of M versus t.B: There are two values of t that have a circulation of 9 thousand. Find both of them.C: Explain in practical terms what is happening to magazine sales over the period from 2010 to 2015.
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Round your answer to two decimal places if necessary.
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What will be an ideal response?
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A:
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B: 
and 
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C: The circulation increases until early 2013 and decreases after that.
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Mathematics
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A. 
B. 
C. 
D. 
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