12th Edition

ISBN: 9780135240687

Author: Lial

Publisher: PEARSON

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Textbook Question

Chapter 4.2, Problem 7E

In each of the following problems, find an exponential function of the form f ( t ) = y 0 b t to model the given data. (See Examples 3 and 4.)

Personal Consumption Expenditures Thetotal amount of expenditures in the United States on video and audio equipment, computers, and related services was approximately $9.6 billion in 1990 and $109.2 billion in 2015. (Data from: The Federal Reserve Bank of St. Louis.)

Let t = 0 corresponds to the year 1990, and find a model for these data.

According to the model, what were the expenditures in 2014?

If the model remains accurate, estimate the expenditures for 2020.

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Chapter 4.2, Problem 6E

Chapter 4.2, Problem 8E

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Chapter 4 Solutions

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Ch. 4.1 - Checkpoint 1 (a) Fill in this table: x g(x) =...Ch. 4.1 - Prob. 2CP Ch. 4.1 - Checkpoint 3 Use a graphing calculator to graph ...Ch. 4.1 - Prob. 4CP Ch. 4.1 - Checkpoint 5 Graph Ch. 4.1 - Prob. 6CP Ch. 4.1 - Checkpoint 7 Per-person wine consumption (in...Ch. 4.1 - Classify each function as linear, quadratic, or...Ch. 4.1 - Prob. 2E Ch. 4.1 - Prob. 3E

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Solution Summary: The author calculates a function f(t)=y_0bt for the total amount of expenditures in the United States.

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