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A habitat of prairie dogs can support 
m dogs at most.
The habitat's population, 
p, grows proportionally to the product of the current population and the difference between 
m and 
p.
Which equation describes this relationship?
Choose 1 answer:
(A) 
(dp)/(dt)=kp(m-p)
(B) 
(dp)/(dt)=(km)/(m-p)
(C) 
(dp)/(dt)=(kp)/(m-p)
(D) 
(dp)/(dt)=km(m-p)

A habitat of prairie dogs can support m m dogs at most.\newlineThe habitat's population, p p , grows proportionally to the product of the current population and the difference between m m and p p .\newlineWhich equation describes this relationship?\newlineChoose 11 answer:\newline(A) dpdt=kp(mp) \frac{d p}{d t}=k p(m-p) \newline(B) dpdt=kmmp \frac{d p}{d t}=\frac{k m}{m-p} \newline(C) dpdt=kpmp \frac{d p}{d t}=\frac{k p}{m-p} \newline(D) dpdt=km(mp) \frac{d p}{d t}=k m(m-p)

Full solution

Q. A habitat of prairie dogs can support m m dogs at most.\newlineThe habitat's population, p p , grows proportionally to the product of the current population and the difference between m m and p p .\newlineWhich equation describes this relationship?\newlineChoose 11 answer:\newline(A) dpdt=kp(mp) \frac{d p}{d t}=k p(m-p) \newline(B) dpdt=kmmp \frac{d p}{d t}=\frac{k m}{m-p} \newline(C) dpdt=kpmp \frac{d p}{d t}=\frac{k p}{m-p} \newline(D) dpdt=km(mp) \frac{d p}{d t}=k m(m-p)
  1. Understand the problem: Understand the problem.\newlineWe are given that the population of prairie dogs grows proportionally to the product of the current population pp and the difference between the maximum population mm and the current population pp. This is a typical differential equation problem in population dynamics.
  2. Identify the correct form: Identify the correct form of the equation.\newlineThe growth rate of the population is given by the derivative of the population with respect to time, dpdt\frac{dp}{dt}. Since the growth is proportional to p(mp)p(m-p), we expect the equation to have kp(mp)kp(m-p) on the right-hand side, where kk is the constant of proportionality.
  3. Match the correct form: Match the correct form with the given options.\newlineWe are looking for an equation of the form dpdt=kp(mp)\frac{dp}{dt} = kp(m-p). This matches with option (A).
  4. Verify other options: Verify that the other options are incorrect.\newlineOption (B) has the term (km)/(mp)(km)/(m-p), which does not represent a proportional relationship between the growth rate and p(mp)p(m-p).\newlineOption (C) has the term (kp)/(mp)(kp)/(m-p), which is not the product of pp and (mp)(m-p).\newlineOption (D) has the term km(mp)km(m-p), which suggests that the growth rate is proportional to (mp)(m-p) alone and does not include the current population pp.

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