Equation

Question 1

Population density

Answer 1

Population / area = population density

Question 2

Finding birth rate

Answer 2

Births/total population = birth rate

Question 3

Finding death rate

Answer 3

Death/total population=death rate

Question 4

Deaths per 1,000

Answer 4

Deaths/1000= death per 1000

Question 5

Population growth rate

Answer 5

Birth - death / total population= r (growth rate)
AND
Birth rate - death rate / 1000
AND
(Birth+immigration)-(death+emmigration) / total population. = R ( growth rate)

Question 6

Finding doubling time of a population

Answer 6

.7/r( decimal)= time it will take for a population to double
OR
70%/r(percentage)=time it will take for a population to double

Question 7

Exponential growth

Answer 7

(Nt=N. e^(r)(t) )
0

Question 8

Global population growth

Answer 8

[CBR-CDR] / 10

Question 9

National population growth rate

Answer 9

[(CBR+Immigration)-(CDR+Emigration)] /
10

Question 10

Net migration rate

Answer 10

Number of immigrants /year. / Number of people in the population

Question 11

Growth rate

Answer 11

(birth+immigration)-
(deaths+emigration) / 1000