A country's population consists of both urban and rural inhabitants. Currently the population is 25% urban and 75% rural. The total population does not change in this country, although people move between urban and rural areas as follows: - Each year 6% of the urban population migrates to the rural countryside, while the other 94% stays in the urban city. - Each year 9% of the rural population migrates to the urban cities, while the other 91% stays in the rural country. (a) Let u(t) represent the percentage of the total population that is urban as a function of time t in years. Similarly, let r(t) represent the percentage of the total population that is rural as a function of years. Write a system of differential equations modeling the rates of change in u(t) and r(t). Note: use the variables u and r in entering your answers below. Do not use u(t) and r(t). dtdu=dtdr= (b) What are the initial conditions? Write in decimal form. u(0)=r(0)= (c) Your linear system should have two distinct eigenvalues. Enter these values separated by a comma: The eigenvalues are: (d) What is the solution to the IVP? u(t)=r(t)= (e) In the long term, the population will be \% urban and Srural