Exponential Functions Assignment The answers must show work and have the correct units! 1. The U.S. Federal Debt has grown at an ever-increasing rate throu

Exponential Functions Assignment The answers must show work and have the correct units! 1. The U.S. Federal Debt has grown at an ever-increasing rate throughout the last 19-year
period. The data below reflect the Federal Debt for each of the years given. (Data
drawn at the end of September in each case for consistency.)
Year
U.S. Federal Debt
(in trillions)
2000
5.67
2004
7.38
2008
10.03
2012
16.07
2016
19.57
(Source: https://www.thebalance.com/national-debt-by-year-compared-to-gdp-and-major-events-3306287)
a. Align the years to the number of years since 2000 and write an exponential model
for the data. (Remember to write a FULL model, including units and intervals.)
Round your values to three decimal places.
b. According to your model, what is the percentage change in the Federal Debt each
year?
2. In 2008, 252.9 million DVD’s were sold in the UK. From 2008 through 2014, sales of
DVD’s in the UK declined at an average rate of 11.3% per year.
a. Write an exponential model for DVD sales based on the given information.
b. From your model, estimate the number of DVD’s sold in 2016.

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