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Hatshy [7]
3 years ago
8

The number of animals in a population is 775, and it increases by of 51% each year.

Mathematics
1 answer:
aleksklad [387]3 years ago
8 0

Answer(a):

Exponential growth formula is given by

A=P(1+r)^t

Where preset population = P= 775

Rate of increase = r = 51% = 0.51

t= number of years

A= Future value.

Plug these values into above formula:

A=775(1+0.51)^t

A=775(1.51)^t

Hence required exponential function is A=775(1.51)^t


Answer(b):

plug t=10 years

A=775(1.51)^t=775(1.51)^{10}=775(61.6267795034)=47760.7541151

which is approx 47761.


Answer(c):

Plug A=1150

1150=775(1.51)^t

\frac{1150}{775}=(1.51)^t

\ln(\frac{1150}{775})=t*\ln(1.51)

0.394654192004=t*0.412109650827

0.957643654334=t

Which is approx 1 year.

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