An animal reserve 24,000 elk.The population is increasing at a rate of 13 percent per year.How long will it take for the populat
ion to reach 72,000?If necessary, round your answer to the nearest tenth. The population will reach 72,000 in approximately years
1 answer:
Answer:
9.0 years
Step-by-step explanation:
The exponential equation for the population can be written as ...
population = (initial population)(1 +growth rate)^t
p = 24000(1.13^t)
We want this to be 72000, so ...
72000 = 24000(1.13^t)
Dividing by 24000 gives ...
3 = 1.13^t
Taking logs, we have ...
log(3) = t·log(1.13)
log(3)/log(1.13) = t ≈ 8.98
It will take about 9.0 years for the elk population to reach 72,000.
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I did this with a pencil and no calculator while my daughter was practicing her driving. Please let me know if you have trouble reading it. You'll have to add the calculator stuff yourself.
