Show me how to post my homework

Just do my homework!

  • HTML tags will be transformed to conform to HTML standards.
  • Add rel="nofollow" to external links
Question
Submitted by Thman2c on Tue, 2013-03-26 17:11
due on Wed, 2013-04-10 17:09
answered 1 time(s)
Hand shake with smartwriter: Complete ($8.00 paid)
Thman2c is willing to pay $25.00
Thman2c bought 189 out of 190 answered question(s)

Assignment 1: Exponential Growth

Assignment 1: Exponential Growth

In Module 4, you were introduced to the concept of exponential functions that can be used to model growth and decay. In this exercise, you will use a Microsoft Excel spreadsheet to calculate the exponential growth of a population of your choosing.

Click here to open the Microsoft Excel spreadsheet that you will use to perform the calculations for this assignment.

In the spreadsheet, perform the following operations:

  1. Input a population value into the box next to Initial Populationon the spreadsheet. This population should be anything such as the people, animals, microorganisms, or plants.
  2. Input a rate of growth for your population into the box next to Rate 1. Since we are interested in a positive annual percent growth rate per year, this number should be greater than zero percent. Be sure to input this number in the form of a decimal.
  3. Repeat the above procedure for Rate 2 and Rate 3. Make sure that the values you select differ by two percent. For example, the values 0.01, 0.03, and 0.05 would be good choices.
  4. Under the Time (years)column, input three different year values. Make sure that your values increase by a minimum of two years. For example, 3, 5, 7 years would be good choices.
  5. When you input all of your data, you’ll see that the spreadsheet has performed the calculations for the future size of each population, rate of growth, and time interval. Additionally, this information will be presented graphically in the chart.

Now that you’ve completed your analysis, it is now time to report the results and examine your findings.

In a Microsoft Word document, respond to the following:

  1. Calculate what the future size of the population will be, given a specific initial population, rate of growth, and time interval.

Use the exponential equation: Future value = Present value * exp(rt)

    • exp is the base "e"
    • r = annual rate of growth expressed as a percent
    • t = years

Note: The spreadsheet performed these calculations for you, so you can check the answer you obtain with those in the spreadsheet. In order to perform this calculation, you’ll need to have access to a scientific calculator that will have an ex button in order to perform the exp(rt) calculation. There are a number of free scientific calculators available over the Internet. Additionally, all smartphones have calculator apps that have a scientific mode. Check with your instructor for a list of currently available free options if you do not own a scientific calculator.

  1. Repeat the calculation for at least two other values of t; make sure they are at least two years apart from one another. Use the same values you input into the spreadsheet and compare the answers you obtain to those that appear in the spreadsheet.
  1. Repeat the calculations using two more selections of population growth rate; ensure that each population growth rate is at least two percent different than the others. Use the same values you input into the spreadsheet and compare the answers you obtain to those that appear in the spreadsheet.
  1. Examine the graph that your spreadsheet produced based upon the calculations. Did this graph consist of straight lines or curved lines? Describe the shape of these lines for each growth rate. How did they differ? Why?
  2. Explain the implications of growth rate for your population. What do you think will happen over a long period of time if a given population of organisms is allowed to increase without limits? Are there environmental factors that keep populations from growing exponentially unchecked? What would be the impact on environmental resources?
  3. Explain the likelihood of your results. Would it be expected that the percent growth rate would stay constant over long periods? Is exponential growth an appropriate assumption for long periods? If not, what other changes in population size might be expected?

For this assignment, you will submit a spreadsheet and a report. The spreadsheet will be the Microsoft Excel file containing your analysis. Name your Microsoft Excel file as follows: LastnameFirstInitial_M5_A1.xls.

The report will be a Microsoft Word document in which you will address all of the questions in this assignment in the form of a narrative. Name your Microsoft Word document as follows: LastnameFirstInitial_M5_A1.docx.

Submit both documents to the M5: Assignment 1 Dropbox by Saturday, April 20, 2013.

Assignment 1 Grading Criteria
Maximum Points
Select a population size (population could consist of people, animals, microorganisms, or plants).
20
Select a positive annual percent growth rate per year, which should be greater than 0%.
20

Calculate what the future size of the population will be, given the below assumptions.

Use the exponential equation:

  • Future value = Present value *exp(rt)
  • Where exp is the base “e” of exponential,
  • r = annual rate of growth, expressed as a percent
  • t = years
20
Repeat the calculation for SECOND value of t (make sure they are at least two years apart from one another).
20
Repeat the calculation for THIRD value of t (make sure they are at least two years apart from one another).
20
Graph the results for population growth by % growth rate, vs. time in years for all FIRST calculations of t.
40
Graph the results for population growth by % growth rate, vs. time in years for all SECOND calculations of t.
40
Graph the results for population growth by % growth rate, vs. time in years for all THIRD calculations of t.
40
Explain the implications of this growth rate for the population’s resource use and the environment.
40
Explain the likelihood of your above results.

Would it be expected that the % growth rate would stay constant over long periods?
40
Total:
300
Attachments: 
Answer
Submitted by smartwriter on Fri, 2013-04-12 11:15
teacher rated 1164 times
4.447595
purchased 9 times
price: $35.00

Answer rating (rated one time)

5

Assignment 1: Exponential Growth

body preview (3 words)

xxxxxxxxxx 1: xxxxxxxxxxx Growth

file1.doc preview (1094 words)

xxxxxxxxxxx xxxxxx xxx xxxx xx xxxxxxxxxxx xxxxxxxxxxxxxxxxxxx GROWTH � xxxx \* xxxxxxxxxxx xxxxxxxx

xxxxxxxxxxx xxxxxxx

Name:

Course:

College:

xxxxxxx

Date:

Initial xxxxxxxxxx x 50 Lion x

xxxxxx growth xxxx 1= 0.3 percent

Annual growth xxxx xxxxx percent

xxxxxx growth xxxx xxxxx xxxxxxxx

Future xxxxxxxxxx for rate x

xxxxx 3 years x xxx xxxx x

xxxxx x xxxxxx xxx Lion s

xxxxx seven xxxxx xxxx xxxx s

xxxxxx xxxxxxxxxx for xxxx 2

xxxxx 3 xxxxx x xxx Lion xx

after 5 xxxxxx 609 xxxx x

x xxxxxx xxxx Lion s

xxxxxx xxxxxxxxxx xxx rate 3

xxxxx x xxxxx = xxxx

xxxxx x years= xxxxx

7 xxxxxx 6714

xxxxxx

xxxxx model xxx specifically xxxxx to find out xxxxxxxxxxx xxxxxx xx Lion x xx a park. xxxx xxx model xx is apparent that xx xxx current xxxxxx xxxx

- - - more text follows - - -


Buy this answer

Try it before you buy it
Check plagiarism for $2.00