The exposure index EI for a 35 millimeter camera is a measurement of the amount of light that hits the film. It is determined by the equation  EI = log2 f2/t ,  where f is the "f-stop" setting on the camera, and t is the exposure time in seconds. Suppose the f-stop setting is 4 and the desired exposure time is 2 seconds. What will the resulting exposure index be? EI =

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
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Chapter6: Exponential And Logarithmic Functions
Section6.6: Exponential And Logarithmic Equations
Problem 79SE: Recall the formula for continually compoundinginterest, y=Aekt. Use the definition of a...
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The exposure index EI for a 35 millimeter camera is a measurement of the amount of light that hits the film. It is determined by the equation 

EI = log2 f2/t ,  where f is the "f-stop" setting on the camera, and t is the exposure time in seconds. Suppose the f-stop setting is 4 and the desired exposure time is 2 seconds. What will the resulting exposure index be?
EI = 
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