Population Growth Decay

Does the following equation represent growth or decay?

• Growth

• Decay

A town has a population of 8,000 people, and it grows at a rate of 3% per year. Which equation represents the population after t years?

A city's population is 12,000 and it decreases by 2% annually. Which equation represents the population after t years?

A population of 5,000 grows by 4% each year. What is the population after 5 years?

• 5849 people

• 5000 people

• 6083 people

• 4077 people

From 2000 - 2010 a city had a 2.5% annual decrease in population. If the city had 2,950,000 people in 2000, determine the city’s population in 2008.

Round to the nearest..... (these are people)... so whole number!

Mathematical Equivalence

ON

A population of fish starts at 8,000 and decreases by 6% per year. What is the population of fish after 10 years?

• 14327

• 4309

• 839

• 7680

In 1960, the country of Puerto had a population of 337,000 people. Its population is decreasing exponential at a rate of 5%. According to this model what would the population of Puerto be in 2020? Round to the nearest whole number

The population of Pallet Town increases by 15% every year. If there are currently 190,000 people living there, what will be the population in 13 years?

If necessary, round your answer to the nearest whole number.

• 4 people.

• 22,972 people.

• 1,169,030 people.

• 1,188,311 people.

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee

What is happening to the population?

• It grows at a rate of 90%

• It dies at a rate of 90%

• It grows at a rate of 10%

• It dies at a rate of 10%