Final answer:
The equation represents a nonlinear first-order ordinary differential equation that describes the population growth of yeast over time.
Step-by-step explanation:
The given equation represents a mathematical model called a differential equation. Specifically, it is a nonlinear first-order ordinary differential equation.
The equation describes the population growth of yeast over time, where x(n) represents the yeast population at time n. The parameters r, a, and K are constants that affect the growth rate and carrying capacity of the yeast population.