143. Online Shopping In 2011 online sales were $192 billion, and in 2014 they were $249 billion. (Source: Forrestor Forecast.) a. Find a linear function S that models these data. Write S(x) in slope-intercept form. b. Interpret the slope of the graph of S. c. Determine when online sales were $230 billion.

Algebra for College Students
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ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
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Chapter8: Functions
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143. Online Shopping In 2011 online sales were $192 billion, and in 2014 they were $249
billion. (Source: Forrestor Forecast.)
a. Find a linear function S that models these data. Write S(x) in slope-intercept
form.
b. Interpret the slope of the graph of S.
c. Determine when online sales were $230 billion.
Transcribed Image Text:143. Online Shopping In 2011 online sales were $192 billion, and in 2014 they were $249 billion. (Source: Forrestor Forecast.) a. Find a linear function S that models these data. Write S(x) in slope-intercept form. b. Interpret the slope of the graph of S. c. Determine when online sales were $230 billion.
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