Name the four factors that affect population growth. then, explain how each factor contributes to population growth.

The four factors are birth rate, immigration, death rate, and emigration.

Birth rate and immigration add individuals to the population, increasing the size.

Death rate and emigration remove individuals to the population, decreasing the size.

(birth rate + immigration) – (death rate + emigration) = population growth.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

answer: c.

explanation: