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cxttiemsp021
17.09.2019 •
Mathematics
In 2009 there was an endangered population of 270 cranes in a western state. due to wildlife efforts, the population is increasing at a rate of 5% per year.
a. what exponential function would be a good model for this population of cranes?
b. if this trend continues, how many cranes will there be in this population in 2020?
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Ответ:
A=future amount
P=present amount
r=rate in decimal
t=time in years
given
P=270
r=5%=0.05
the equaton is
for any year, 2009, is year 0, so if you wanted to input the year then
A.
b. 2009 to 2020
2020-2009=11 years
t=11
f(11)=461.792
about 462 cranes
A.
B. about 462
Ответ:
Given function:
p(t) = 2³a)
Find x when p(t) = 200:
2³b)
Find p(t) when t = 4:
p(4) = 2³(