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This expression 12(1.0515)t models the population of elephants in a wildlife refuge after years since 1975 is the population of elephants increasing or decreasing?

This Expression 1210515t Models The Population Of Elephants In A Wildlife Refuge After Years Since 1975 Is The Population Of Elephants Increasing Or Decreasing class=

Sagot :

The function for an exponential growth/decay is given as follows;

[tex]f(x)=a(1+r)^x[/tex]

Where,

[tex]\begin{gathered} x=\text{Number of years} \\ a=\text{initial value} \\ r=\text{rate of growth} \end{gathered}[/tex]

Observe that from the equation provided, the rate is 1.015. This means there is a growth. If there was a decay(decrease), the rate would be less than 1 because, the formula then would be;

[tex]f(x)=a(1-r)^x[/tex]

ANSWER:

Therefore, the population of elephants is INCREASING.

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