For example, some inexpensive mowers are designed to have a service life of 200 or fewer hours while pricier mowers typically are designed to last 500 or more hours. Therefore, a lawnmowerâs life expectancy can be based on how often and how long it is used.
exponential growth. Increase in number or size, at a constantly growing rate. It is one possible result of a reinforcing feedback loop that makes a population or system grow (escalate) by increasingly higher amounts. Compound interest is an example of exponential growth. Use 'exponential growth' in a Sentence.
1 Growth over discrete intervals. 2  Rate of growth (lambda) is the ratio of population size at the end of one interval to population size at the end of the previous interval. 3  N(t+1) = N(t) * (lambda); N(t)=N(0) * (lambda) t. 4  r = log e (lambda) and lambda = e rt; when r = 0, lambda = 1 and population density is stable.