The average number of vehicles waiting in a line to enter a parking ramp can be modeled by the function  f ( x ) = x2 / 5( 4 - x ) where x is a quantity between 0 and 1 known as the traffic intensity. Find the rate of change of the number of vehicles in line with respect to the traffic intensity for x = 0.4 What is the rate of change for x = 0.4?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section2.4: Average Rate Of Change Of A Function
Problem 2E
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The average number of vehicles waiting in a line to enter a parking ramp can be modeled by the function 

f ( x ) = x2 / 5( 4 - x )

where x is a quantity between 0 and 1 known as the traffic intensity. Find the rate of change of the number of vehicles in line with respect to the traffic intensity for x = 0.4

What is the rate of change for x = 0.4? 

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