Instantaneous Rate of Species Invasion
Assume the area invaded by an invasive species is modeled by , where t is in years. What is the instantaneous rate of spread at t = 3 years?
A
90 square km per year
B
60 square km per year
C
30 square km per year
D
60 square km per year, since the derivative evaluated at t = 3 gives 60.
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