Question

There was approximately 25,000 fish in the pond on March 21. There were approximately 100,000 fish on March 27. If the number of fish in the pond were growing exponentially, how many fish would there be on March 31?

Answer 1

Let's assume initial is at March 21

In March 21 : t=0

so,

now, we can use formula

In March 27:

t=27-21=6

P=100000

now, we can plug values

now, we can solve for r

we can take ln on both sides

now, we can plug it back

and we get

March 31:

t=31-21=10

now, we can plug t=10

and we get

...........Answer