The cost of a certain amount of computer storage in 1980 was approximately $400,000. From that time, the cost of the storage has been decreasing at a rate of approximately 31% every 2 years. Find an exponential model for the cost C (in dollars) of this amount of storage t years after 1980. C =     Using the model, find the cost (in dollars) of this amount of storage in 2018. (Round your answer to the nearest integer.) $

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.2: Applications Of Exponential Functions
Problem 41E
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The cost of a certain amount of computer storage in 1980 was approximately $400,000. From that time, the cost of the storage has been decreasing at a rate of approximately 31% every 2 years. Find an exponential model for the cost C (in dollars) of this amount of storage t years after 1980.
C =
 
 
Using the model, find the cost (in dollars) of this amount of storage in 2018. (Round your answer to the nearest integer.)
$
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