Math 1115 Excel Computer Project 2 Assignment | Buy Assignments Online

Math 1115 Excel Computer Project 2

Don't use plagiarized sources. Get Your Assignment on
Math 1115 Excel Computer Project 2 Assignment | Buy Assignments Online
Just from $13/Page
Order Now


Working with Polynomial and Rational Functions

Goals: Model data using polynomial regression.


Use Excel to fit a polynomial model to data

Use the model to answer questions about the real world situation.

Plot data and fit a trend curve to the data.


Place each problem on a separate worksheet

Select the cells containing the data

Use Insert Chart to get the scatterplot of the data

Select Add Trendline

Select Polynomial with the order (degree) of the polynomial

Make sure you display the equation on the chart

Type your answers to the questions on the spreadsheet.

Problem 1: The following table gives the number of U.S cellular telephone subscribers in

millions. Create a scatter plot for the data with x equal to the number of years from 1985.

a. Find the quadratic function that is the best fit for these data with x equal to the number of years from 1985 and y equal to the number subscribers in millions.


b. Use the model to estimate the number in 2015.

Year Subscribers


Year Subscribers



1985 0.340 1999 86.047

1986 0.682 2000 109.478

1987 1.231 2001 128.375

1988 2.069 2002 140.767

1989 3.509 2003 158.722

1990 5.283 2004 182.140

1991 7.557 2005 207.896

1992 11.033 2006 233.000

1993 16.009 2007 245.788

1994 24.134 2008 262.700

1995 33.786 2009 276.611

1996 44.043 2010 300.520

1997 55.312

1998 69.209


2. Problem 2: The table below gives the U.S. homicide rates per 100,000 people for the years

from 1990 through 2011. Make a scatter plot of the data, with x equal to the number of years

after 1990.


a. Find the cubic function that is the best fit for the data, with x equal to the number of years from 1990. Graph the function in blue.

b. Find the quartic function that is the best fit for the data. Graph the function in red.

c. Which function do you think is better? d. Estimate the homicide rate for 2015.

Year Homicide Rate Year Homicide Rate

1990 10.0 2002 6.9

1991 10.5 2003 6.3

1992 10.0 2004 5.9

1993 10.1 2005 5.6

1994 9.6 2006 5.7

1995 8.7 2007 5.6

1996 7.9 2008 5.4

1997 7.4 2009 5.0

1998 6.8 2010 4.8

1999 6.2 2011 4.7

2000 6.1

2001 7.1


3. Problem 3: The sales per share S (in dollars) for Cost Plus, Inc. for the years 1996 to 2005

are shown in the table below. Create a scatter plot of the data. Let t represent the year with

t = 6 corresponding to 1996.


a. Find the trend curve for the graph. Show a linear model of the data in blue, a quadratic model of the data in red, and a cubic model of the data in green with the scatter plot.

b. Which do you think fits the data the best?

c. Use each model to predict the year in which the sales per share will be about $50.

Year Sales per share, S

1996 11.79

1997 13.33

1998 15.81

1999 19.60

2000 23.50

2001 26.38

2002 32.12

2003 36.73

2004 41.52

2005 43.99


4. Problem 4: The table shows the national defense outlays D (in billions of dollars) from 1997 to

2005. The data can be modeled by

2. 21.493 39.06 273.5 , 7 15

0.0051 0.1398 1



where t is the year, with t = 7 corresponding to 1997.

Year Defense Outlays Year Defense Outlays

1997 270.5 2002 348.6

1998 268.5 2003 404.9

1999 274.9 2004 455.9

2000 294.5 2005 465.9

2001 305.5


a. Create a scatter plot of the data

b. Predict the national defense outlays for the years 2010, 2015, and 2020.

c. The national defense outlay for 2015 was $575 billion. How does this compare to your prediction.

d. Use your calculator to predict defense outlays using the given model. How do they

compare with your prediction from the data? Are the predictions reasonable?

e. Determine a horizontal asymptote of the graph of the model. What does it represent in

the context of the situation?

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Homework Writing Services
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Excellent job
Customer 456821, May 3rd, 2022
The paper was great but it was almost 24 hours late
Customer 454067, February 21st, 2020
Web Design
Good work. Avoid such revisions.
Customer 452441, April 12th, 2022
Home Repair & Home Maintenance
Good job!
Customer 463337, November 21st, 2022
Computer science
Didn't find until the last minute that I needed to pay extra money for an extra page, which caused my stuff to be turned in late...
Customer 452515, March 25th, 2020
good job
Customer 456821, October 8th, 2022
Public Relations
This writer did a good job on my paper, it had to be revised and I couldn't have asked for a better writer. My paper was on time. Thanks!
Customer 452621, January 22nd, 2020
Excellent work!
Customer 463469, October 17th, 2022
Good work.
Customer 456821, June 20th, 2022
Good job. Always limit quoted content even when instructed to use them.
Customer 452441, March 31st, 2022
Human Resources Management (HRM)
Thank you for this excellent power point
Customer 453633, February 24th, 2020
Always confirm page length (word count) before submitting.
Customer 462809, April 6th, 2022
Customer reviews in total
Current satisfaction rate
3 pages
Average paper length
Customers referred by a friend
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat