Suppose that the average annual rate of population increase in Econland in recent years was about 2 percent. Based on this rate of growth, the population of Econland will double in about

A) 7 years.
B) 11 years.
C) 35 years.
D) 46 years.

It takes approximately 35 years for the population to double at a growth rate of 2 percent annually. This can be calculated using the rule of 70, which states that the doubling time is approximately equal to 70 divided by the growth rate. In this case, 70 divided by 2 is equal to 35.