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:
 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.
 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.
 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.
 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.
 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:
 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.
 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.
 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.
 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?
 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?
 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:

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

MAT 106 Module 5 Unit 5 Assignment 1 LASA 2 Exponential Growth(NEW COURSE)A++++WORD+EXCEL is Attached
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xxxxxxxxxx future xxxxxxxxxx xxx xx individuals xx xxxxx xx xxxxxxx x xxxxxxxxx Over xxx 20, and 30 years. xxxxx xx
2.
xxx xxxxx rate changes xx 7, x xxx 15 xxxxxxx
xxxx xxxxx rates at the xx year intervals the xxxxx are xxxxxxx xxxxxxxx the xxxx intervals to just the five year xxxx it produces stighter lines, xxx xxxxxxxxxx the rate to xx x and 15 perecent also produces straight lines.
Yes completely the exponential rate gain that xxxx populaion xxxxxxxxxxx just starting off from x xxxxx xx 50 can xxxx but not to xxx xxxxx xx enviromental xxxxx xxxx seem to xx xx xx xxxxxxx speed xxx the intial start xxxxxxxxx But xxxxxxxxx factors xxxxx happen xxxx as loss xx food xxxxxxxxx and xxxx xxxx available to xxxxxxxx
For xxxxx first thirty xxxxx the xxxxxx xxx xx xxxxxx xxx xx xxx xxxxxxxxxx grows the xxxxxx or xxxx xxxx xxxxxxxxx much to xxx xxxxxx xx compounding.
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xxx EMBED xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxx
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file2.xls preview (23 words)
xxxxxx
xxxxxxxxxxxxxxxxxxxInitial Popluation  50  xxxx x  xxxx 
xxxx 2  0.03  
xxxx x  0.05  
xxxx (years)  Future Population xxx xxxx 1  xxxxxx Population for xxxx x  Future xxxxxxxxxx xxx xxxx x 
10  xx  xx  82 
12  56  71  xx 
15  58  78  105 
xxxxxx
xxxxxx
xSheet3
file3.xls preview (23 words)
xxxxxx
xxxxxxxxxxxxInitial xxxxxxxxxx  50  Rate 1  0.01 
Rate x  xxxx  
Rate 3  0.05  
Time (years)  xxxxxx xxxxxxxxxx xxx Rate 1  Future Population for xxxx x  Future xxxxxxxxxx for Rate 3 
10  55  67  82 
12  56  xx  91 
15  xx  xx  xxx 
xxxxxx
xSheet2
Sheet3
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Kindly give x rating xx xx solution and xxx xx know xxxxxxxx you xxxx xxxx in future. xxxxx You.
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xxxxxxxxxxx xxxxxx
According xx recent xxxxxxxxxx the xxxxxx States population is about 319 Million.
Let xx xxxxxxxx xxx xxxxxx growth xxxxx xxx xxxx xxxxxxxxxx xx be 1%, 2% and xx respectively.
The xxxxxx value for xxxx population can be calculated xxxxx the xxxxxxxxx xxxxxxxx
Future xxxxxxxxxx xxxxx 10 years
xxxxxxx Population = 319
xxxxxx xxxx of xxxxxxx x = 1%
xxxx xxxxxxxx x = xx
xxx xxxxxx size of the population, xxxxxxxxxxx xxx xxxxx xxxxxxx xxxxxxxxxxx xxxx of growth, and xxxx interval can be calculated as xxxxxxxx
xxxxx xxx xx initial xxxxxxxxxx of 319 million growing xx an annual rate of 1%, xxx xxxxxx size xx xxx population xxxxx x span xx 10 xxxxx shall be xxxxx xxxxxxxx
Future xxxxxxxxxx xxxxx xx years
xxxxxxx xxxxxxxxxx = 319
xxxxxx rate of xxxxxxx x x 1%
Time (years), x = 20
xxx xxxxxx xxxx xx the population, considering the xxxxx initial xxxxxxxxxxx rate xx growth, xxx xxxx xxxxxxxx can xx calculated xx xxxxxxxx
xx
Thus, xxx an xxxxxxx
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xxxxx
xxxxxxxxxxxxxxxx Popluation  xxx  Rate x  xxxx 
xxxx x  xxxx  
Rate x  xxxx  
Time (years)  Future Population xxx Rate 1  xxxxxx xxxxxxxxxx for Rate x  xxxxxx Population xxx xxxx x 
10  352  xxx  xxx 
20  xxx  xxx  709 
30  xxx  581  1059 
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Assignment 1: Exponential Growth
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Assignment 1: xxxxxxxxxxx Growth
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EXPONENTIAL xxxxxx xxx xxxx \* MERGEFORMAT �1� EXPONENTIAL xxxxxx � xxxx xx MERGEFORMAT �3�
Exponential xxxxxxx
xxxxxx
xxxxxxxx
College:
xxxxxxx
Date:
�
xxxxxxx xxxxxxxxxx = 50 Lion s
Annual xxxxxx rate xx 0.3 xxxxxxxx
Annual xxxxxx xxxx xxxxx percent
xxxxxx xxxxxx xxxx xxxxx percent
Future population xxx xxxx x
After x years = 122 xxxx x
After x xxxxxx xxx xxxx x
After xxxxx years xxxx xxxx s
Future xxxxxxxxxx for rate x
xxxxx 3 xxxxx = 224 xxxx s
after 5 years= 609 Lion s
7 xxxxxx 1655 xxxx x
xxxxxx xxxxxxxxxx xxx rate 3
xxxxx x years = xxxx
xxxxx 5 xxxxxx 1655
7 xxxxxx xxxxx
xxxxxx
This xxxxx xxx specifically meant to xxxx out exponential xxxxxx of Lion s in x park. From xxx xxxxx it is xxxxxxxx that xx xxx current growth rate xxxxxxxxx xxxxxxxxxx the xxxxxx xxxx xxxxxxxx exponentially xxxxx a certain point, and xxxx it declines. xxxxx xx xx xxxxx xxxx xxx growth rate xxx be xxxxxxx and a xxxxx xx ecological xxxxxxxxx is realized. xxx state of xxxxxxxxxxx xxx be xxxxxxxxxxx xx xxxx the main xxxxxxxx requirements of xxxx xxxx in the park are met.
Increase in xxxxxx population xxxxxxx a xxxxxxxx pattern xxxxx is xxxxxxxx xx xx xxxxxxxxxxxxxx xx exponential xxxxxxx xxxxxxxxx x number shows exponential growth when it
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xxxxxxxxxxx xxxxxx
Student’x Name
xxxxxx
xxxxxxxxxx
xxxx
Calculate what the future xxxx of xxx population will be, xxxxx a xxxxxxxx initial xxxxxxxxxxx xxxx xx growth, and time interval.
xxxxx the xxxxxxxxxxx xxxxxxxx formula if xxx initial population xx P, rate xx growth is r and xxxx xxxxxx is t xxxxx xxxx the xxxxxxxxxx xxxxx t xxxxx would be,
xxxxxxxxxx x P*
xxxx xx xxxxxxxxx for xxxx xx Here r = xxxxx xxxxxxx population xx xxxxxx
So, population after xx years = xxxxxx x 16487.21
xxxxxx xxx calculation xxx at least xxx other xxxxxx of t; make xxxx they are at least xxx xxxxx xxxxx from xxx another. xxx the xxxx xxxxxx xxx xxxxx xxxx the spreadsheet xxx compare xxx xxxxxxx xxx obtain xx xxxxx xxxx appear xx xxx spreadsheet.
xxxxx xxx xxxx xxxxxxx xx above we xxxxx
Population xxxxx 30 years x xxxxxx x 44816.89
Population xxxxx xx xxxxx x xxxxxx = 200855.37
xxxx xxxx xxx xxxxxxxxxxx did xxx consider any xxxxx xxxxxxx points and xxxxxx the decimal points the answer
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Sheet1
xxxxxxxxxxxxxInitial xxxxxxxxxx  xxxxx  Rate 1  xxxx 
Rate 2  0.08  
xxxx x  0.01  
Time xxxxxxx  Future xxxxxxxxxx xxx xxxx x  Future xxxxxxxxxx for xxxx 2  xxxxxx Population for Rate x 
xx  xxxxx  xxxxx  xxxxx 
30  xxxxx  xxxxxx  xxxxx 
xx  200855  1215104  xxxxx 
Sheet1
xxxxxxx
xxxxxx
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xxxxxxxxxxx xxxxxx
Student’x Name
xxxxxx
Instructor
Date
xxxxxxxxx what xxx xxxxxx size xx the population xxxx xxx given a specific initial xxxxxxxxxxx rate of growth, and xxxx xxxxxxxxx
Using the xxxxxxxxxxx equation xxxxxxx if the xxxxxxx population xx P, xxxx of xxxxxx xx x and time xxxxxx xx t xxxxx xxxx the xxxxxxxxxx after t years would be,
xxxxxxxxxx x xx
Lets us xxxxxxxxx xxx rate 1. Here r x xxxxx initial population is xxxxxx
So, population xxxxx 10 years x 10000* x 16487.21
Repeat the calculation xxx xx least xxx other xxxxxx xx xx make sure they are at xxxxx two years apart from one another. xxx xxx xxxx values you xxxxx into xxx xxxxxxxxxxx and xxxxxxx xxx answers you obtain to xxxxx xxxx appear in the xxxxxxxxxxxx
xxxxx the same xxxxxxx as above we xxxxx
xxxxxxxxxx xxxxx 30 years x xxxxxx x xxxxxxxx
Population xxxxx 60 years = 10000* = xxxxxxxxx
xxxx that xxx spreadsheet did xxx xxxxxxxx any xxxxx xxxxxxx xxxxxx and except xxx decimal xxxxxx xxx xxxxxx
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xxxxxx
xxxxxxxxxxxxxxInitial xxxxxxxxxx  xxxxx  xxxx x  0.05 
xxxx x  0.08  
xxxx 3  xxxx  
Time xxxxxxx  Future Population for xxxx 1  Future xxxxxxxxxx for xxxx x  Future Population for Rate 3 
xx  xxxxx  22255  11051 
xx  xxxxx  110231  xxxxx 
60  xxxxxx  xxxxxxx  xxxxx 
Sheet1
xxxxxx
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Assignment 1 LASA 2 Exponential Growth*****Already A++ Rated Tutorial Use as Guide Paper*****
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xxxxxxxxxx x LASA x Exponential Growth
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Assignment x LASA 2 Exponential Growth/Final Report.docx
I xxxxxx xx xxxxxxx xxxxxxxxxx xx 123,456 to xxx xx xxxx xxxxxxxxxxxxxx x xxxx used the exponential xxxxxxxxx xxxxxx value = xxxxxxx Population * ert to xxxxxxxxx the final xxxxxxxxxx xxxxx x xxxxx xxxxxx xx time. In this xxxxxxxxx e is xxx xxxxxxx xxxxxx (approximately xxxxxxxx r xx xxx annual xxxx xx growth expressed xx a decimal; xxx x xx time xxxxxx passed xx years.
I then xxxxxxxxxx the xxxxxxxxxx xxxxx 15 years xxxxx three xxxxxxxxx growth rates – xxx xxx xxx 9%.
Population xx First Time = Initial xxxxxxxxxx * ert
For xxxx 1 = 123456 x e(0.05 x xxx = xxxxxxxxxx xxxxxxxxx xxxx value from spreadsheet xx xxxxxxxxxx xxxx 2 = 123456 x e(0.07 * 15) = xxxxxxxxxx confirmed with xxxxx from spreadsheet of xxxxxx
For xxxx x = xxxxxx x e(0.09 x xxx =476222.33, xxxxxxxxx xxxx xxxxx from xxxxxxxxxxx of 476222
I repeated the process xx xxxx the xxxxxxxxxx after 30 years.
xxxxxxxxxx xx Second xxxx x xxxxxxx Population * xxx
For xxxx 1 x xxxxxx * xxxxxx * 30) x xxxxxxxxxx confirmed with value xxxx xxxxxxxxxxx xx = xxxxxx
For Rate 2 x xxxxxx * xxxxxx * 30) x xxxxxxxxxxx confirmed with xxxxx xxxx xxxxxxxxxxx of = xxxxxxx
For Rate x x xxxxxx x xxxxxx x xxx x xxxxxxxxxxx xxxxxxxxx xxxx value from spreadsheet of x 1836992
And x xxx the same thing xxx xxxxx 45 years.
xxxxxxxxxx xx Third Time = Initial xxxxxxxxxx * ert
xxx xxxx 1 = xxxxxx x xxxxxx x 45) x 1171317.92, confirmed with value from spreadsheet of x
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