The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exponential function to model this situation. Use y and x as your variables.

Question

Mathematics

Adrian Long

10 February, 13:25

The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exponential function to model this situation. Use y and x as your variables.

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Answers (1)

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Jacquelyn Gomez · Answer 1

y=45000 (1-0.03) ^x

Step-by-step explanation:

1) the exponential decay formula is

y=c (1-r) ^x

where c = starting amount

r=rate of change

x=time

so

y=45000 (1-0.03) ^x

y=45000-1350x