# population growth

### The population of a town doubles every 12 years. If the population in 1945 was 11,005 people, what w

The population of a town doubles every 12 years. If the population in 1945 was 11,005 people, what was the population in 1981? Calculate the...
Thread by: math_celebrity, Feb 6, 2022, 0 replies, in forum: Calculator Requests

### A population of 200 doubles in size every hour. What is the rate of growth of the population after 2

A population of 200 doubles in size every hour. What is the rate of growth of the population after 2.5 hours? Time 1: 400 Time 2: 800 Time 3:...
Thread by: math_celebrity, Jan 1, 2022, 0 replies, in forum: Calculator Requests

### Suppose a city's population is 740,000. If the population grows by 12,620 per year, find the populat

Suppose a city's population is 740,000. If the population grows by 12,620 per year, find the population of the city in 7 years. We setup the...
Thread by: math_celebrity, Jul 16, 2021, 0 replies, in forum: Calculator Requests

### The population of Westport was 43,000 at the beginning of 1980 and has steadily decreased by 1% per

The population of Westport was 43,000 at the beginning of 1980 and has steadily decreased by 1% per year since. Write an expression that shows the...
Thread by: math_celebrity, Dec 19, 2020, 0 replies, in forum: Calculator Requests

### A Petri dish contains 2000. The number of bacteria triples every 6 hours. How many bacteria will exi

A Petri dish contains 2000. The number of bacteria triples every 6 hours. How many bacteria will exist after 3 days? Determine the amount of...
Thread by: math_celebrity, Nov 27, 2020, 0 replies, in forum: Calculator Requests

### A city’s population in the 1987 was 125,524. In 2007 the population was 436,884. Determine the popul

A city’s population in the 1987 was 125,524. In 2007 the population was 436,884. Determine the population rate of increase or decrease Find the...
Thread by: math_celebrity, Nov 18, 2020, 0 replies, in forum: Calculator Requests

### Suppose a city's population is 740,000. If the population grows by 12,620 per year, find the populat

Suppose a city's population is 740,000. If the population grows by 12,620 per year, find the population of the city in 7 years Set up the...
Thread by: math_celebrity, Oct 18, 2020, 0 replies, in forum: Calculator Requests

### A population grows at 6% per year. How many years does it take to triple in size?

A population grows at 6% per year. How many years does it take to triple in size? With a starting population of P, and triple in size means 3...
Thread by: math_celebrity, Oct 16, 2020, 0 replies, in forum: Calculator Requests

### A town has a population of 50,000. Its rate increases 8% every 6 months. Find the population after 4

A town has a population of 50,000. Its rate increases 8% every 6 months. Find the population after 4 years. Every 6 months means twice a year. So...
Thread by: math_celebrity, Oct 11, 2020, 0 replies, in forum: Calculator Requests

### A social networking site currently has 38,000 active members per month, but that figure is dropping

A social networking site currently has 38,000 active members per month, but that figure is dropping by 5% with every month that passes. How many...
Thread by: math_celebrity, May 18, 2020, 0 replies, in forum: Calculator Requests

### On January 1st a town has 75,000 people and is growing exponentially by 3% every year. How many peop

On January 1st a town has 75,000 people and is growing exponentially by 3% every year. How many people will live there at the end of 10 years?...
Thread by: math_celebrity, May 5, 2020, 0 replies, in forum: Calculator Requests

### A celebrity 50,000 followers on Instagram. The number of follower increases 45% each year. How many

A celebrity 50,000 followers on Instagram. The number of follower increases 45% each year. How many followers will they have after 8 years? We...
Thread by: math_celebrity, Mar 25, 2020, 0 replies, in forum: Calculator Requests

### A colony of 995 bacteria doubles in size every 206 minutes. What will the population be 618 minutes

A colony of 995 bacteria doubles in size every 206 minutes. What will the population be 618 minutes from now? Calculate the doubling time...
Thread by: math_celebrity, Mar 16, 2020, 0 replies, in forum: Calculator Requests

### In 2010, the population of Greenbow, AL was 1,100 people. The population has risen at at rate of 4%

In 2010, the population of Greenbow, AL was 1,100 people. The population has risen at at rate of 4% each year since. Let x = the number of years...
Thread by: math_celebrity, Jun 14, 2019, 0 replies, in forum: Calculator Requests

### A town has a population of 25,000 and grows at 7.7% every 4 months. What will be the population afte

A town has a population of 25,000 and grows at 7.7% every 4 months. What will be the population after 6 years? 1 year = 12 months 12 months / 4...
Thread by: math_celebrity, Nov 25, 2018, 0 replies, in forum: Calculator Requests

### A colony of 100 bacteria doubles in size every 34 hours. What will the population be 68 hours from n

A colony of 100 bacteria doubles in size every 34 hours. What will the population be 68 hours from now T(0) = 100 T(34) = 100 * 2 = 200 T(68) =...
Thread by: math_celebrity, Apr 19, 2018, 0 replies, in forum: Calculator Requests