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choatefarmsus
23.01.2020 •
Mathematics
Atown has a population of 1600 people at time =0. in each of the following cases, write a formula for the population p, of the town as a function of year
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Ответ:
a)![P(t) =1600 +50t](/tpl/images/0467/9395/ec727.png)
b)![P(t) = 1600 (1.05)^t](/tpl/images/0467/9395/e6e31.png)
Step-by-step explanation:
Assuming the complete question : "A town has a population of 1000 people at time t = 0. In each of the following cases, write a formula for the population, P, of the town as a function of year t. (a) The population increases by 50 people a year. (b) The population increases by 5% a year."
Part a
For this case we can use a linear model in order to estimate the population size since we have a fixed increase each year. So our model would be given by:
Where
on this case since represent the increase per year of the slope for the linear model. And the initial amount is
, so then the model is:
Part b
For this case we have a rate of increase and when we have this the lineal model is not the most appropiate. So then we can use an exponential model given by:
Where
represent the initial population and for this case b is the rate of increase
since each year we have an increase of 5% and t is the time. So then the model is given by:
Ответ:
i have no idea how to explain it but this is what is would look like