3. The number of cellular phones in use in the United States is increasing exponentially. The number, N, in millions, in use is given by the exponential function N(t) = 0.05(1.32)', where "t" is the number of years after 1990. (Source: Cellular Telecommunications and Internet Association) %3D Find N(30) and explain its meaning in the context of the scenario. a. b. Find t when N(t) = 420 and explain its meaning in the context of the scenario.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section4.CR: Chapter Review
Problem 12CC
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3. The number of cellular phones in use in the United States is increasing exponentially.
The number, N, in millions, in use is given by the exponential function N(t) =0.05(1.32)', where
t" is the number of years after 1990. (Source: Cellular Telecommunications and Internet Association)
%D
Find N(30) and explain its meaning in the context of the scenario.
a.
wed afal
b. Find t when N(t) = 420 and explain its meaning in the context of the scenario.
%3D
c. Explain the meaning of the value 1.32 (from the equation) in the context of the scenario.
Transcribed Image Text:3. The number of cellular phones in use in the United States is increasing exponentially. The number, N, in millions, in use is given by the exponential function N(t) =0.05(1.32)', where t" is the number of years after 1990. (Source: Cellular Telecommunications and Internet Association) %D Find N(30) and explain its meaning in the context of the scenario. a. wed afal b. Find t when N(t) = 420 and explain its meaning in the context of the scenario. %3D c. Explain the meaning of the value 1.32 (from the equation) in the context of the scenario.
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