if a country has a birth rate of 37 and a death rate of 21. what is the populations annual percentage rate of increase. With an annual rate of...

if a country has a birth rate of 37 and a death rate of 21. what is the populations annual percentage rate of increase.

a. 3.6

b. 2.6 

c. 1.6

d. 0.6

2. With an annual rate of increase of 2.2 how long will it take a population to double in size

a. 31.8 years

b. 0.31 years

c. 18.6 years

d. 2.7 years