A manufacturer of motorcycles estimates that the number of motorcycles sold will be given by 125 M (t) = 2300 + - 57 where M(t) is the number of motorcycles (in thousands) and t is the time (in years). How fast will the number of motorcycles sold be changing when t = 9 years? Type your answer in the space below. Make sure to indicate whether it is increasing or decreasing and include the correct units. Edit View Insert Format Tools Table Paragraph v I U A T?v 12pt v

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