Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter5: Exponential And Logarithmic Functions
Section5.5: Exponential And Logarithmic Models
Problem 4ECP
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Question
99.2% of ATMs levy a surcharge on users who are not account holders. The amount of the surcharge for non-account holders can be modeled as
s(t) = 0.72(1.081t) dollars
where t is the number of years since 1995, data from 3 ≤ t ≤ 13.†
(a) Calculate the average rate of change in the amount of the surcharge for non-account holders between 2004 and 2008. Write the result in a sentence of interpretation. (Round your answer to two decimal places.)
(b) Calculate the change and the percentage change in the amount of the surcharge for non-account holders between 2004 and 2008. (Round your answers to two decimal places.)
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