Question 14 (3 points) Assume that a population, P, is changing at a rate proportional to 75 - P. Does it make sense to use differential equations to model the population size? If so, write the differential equation. If not, explain why. Question 15 (3 points) If an object's height is changing at a rate proportional to its original height. Does it make sense to use differential equations to model the height, H, of the object? If so, write the differential equation. If not, explain why. Question 16 (3 points) Assume an object's weight, W, is proportional to its height, H. Does it make sense to use differential equations to model the Weight of the object? If so, write the differential equation. If not, explain why