### Project 10.3

Write a paper using population analysis.

To get you started, select five U.S. cities of different sizes. Find the population of these cites in 1980, 1990, 2000, and 2010.

- Which city seems to have the greatest growth rate for the period

1980-2010? Name the city and predict its population in 2020. - Which city seems to have had the greatest decline in population for the period 1980-2010? Name the city and predict its population in the year 2020.

### Project 10.4

From your local chamber of commerce, obtain the population figures for your city for the years 1980, 1990, 2000 and 2010. Find the rate of growth for each period. Forecast the population of your city for the year 2020. Include charts and graphs. List some factors, such as new zoning laws, that could change the growth rate of your city.

### Project 10.5

Write an essay on carbon-14 dating. What is its relationship to logarithms?

### Project 10.6

A store increases its prices 10% every odd month (January, March, May,… ) and decreases them by 10% every even month (February, April, June, … ). Do prices increase, decrease or stay the same over a long period of time?