The population of a city in 2005 was 18,000. By 2010, the city's population had grown to 45,000. If the population growth follows a exponetial model, what is the projected population for 2015?

Question

Mathematics

Mina Zimmerman

12 November, 20:46

The population of a city in 2005 was 18,000. By 2010, the city's population had grown to 45,000. If the population growth follows a exponetial model, what is the projected population for 2015?

+3

Answers (1)

Know the Answer?

Makhi Hester · Answer 1

First find the rate of growth

45000=18000 (1+r) ^ (2010-2005)

Solve for r

r = ((45,000:18,000) ^ (1:5) - 1) * 100

R=20%

Use it to find the population in 2015

P=45000 (1+0.20) ^ (2015-2010)

P==111,974.4