The number of cell phone subscribers in a certain country in the early 2000s was projected to follow the equation, N(t) = 40t + 75 million subscribers, in year t (t = 0 represents 2000). The average annual revenue per cell phone user was $350 in 2000. (a) Assuming that, because of competition, the revenue per cell phone user decreases continuously at an annual rate of 10%, give a formula for the annual revenue in year t. R(t) = %3D (Б) Using the model you obtained in part (a) as an estimate of the rate of change of total revenue, estimate the total revenue from 2000 into the indefinite future. (If an answer does not exist, enter DNE.) million

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Last edit was secoI
10
В
IU
A
E, E = = - E - EE
Verdana
4
5.
6.
The number of cell phone subscribers in a certain country in the early 2000s was projected
to follow the equation,
N(t) = 40t + 75 million subscribers,
in year t (t = 0 represents 2000). The average annual revenue per cell phone user was
$350 in 2000.
(a)
Assuming that, because of competition, the revenue per cell phone user decreases
continuously at an annual rate of 10%, give a formula for the annual revenue in year t.
R(t) =
(b)
Using the model you obtained in part (a) as an estimate of the rate of change of total
revenue, estimate the total revenue from 2000 into the indefinite future. (If an answer
does not exist, enter DNE.)
2$
million
2#
$
%
&
3
4
6
7
8
Transcribed Image Text:ols Add-ons Help Last edit was secoI 10 В IU A E, E = = - E - EE Verdana 4 5. 6. The number of cell phone subscribers in a certain country in the early 2000s was projected to follow the equation, N(t) = 40t + 75 million subscribers, in year t (t = 0 represents 2000). The average annual revenue per cell phone user was $350 in 2000. (a) Assuming that, because of competition, the revenue per cell phone user decreases continuously at an annual rate of 10%, give a formula for the annual revenue in year t. R(t) = (b) Using the model you obtained in part (a) as an estimate of the rate of change of total revenue, estimate the total revenue from 2000 into the indefinite future. (If an answer does not exist, enter DNE.) 2$ million 2# $ % & 3 4 6 7 8
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