Marine life is dependent upon the microscopic plant life that exists in the photic zone, a zone that goes to a depth where about 1% of the surface light remains. In some waters with a great deal of sediment, the photic zone may go down only 20 feet. In some murky harbors, the intensity of light d feet below the surface is given by I= 1, e -0.28d where l, is the intensity of light at the surface. What percentage of the surface light will reach a depth of (A) 5 feet? (B) 10 feet? (A) The percentage of surface light at 5 feet is %.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
Problem 60SE: The formula for the amount A in an investmentaccount with a nominal interest rate r at any timet is...
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Marine life is dependent upon the microscopic plant life that exists in the photic zone, a zone that goes to a depth where
about 1% of the surface light remains. In some waters with a great deal of sediment, the photic zone may go down only 15 or
20 feet. In some murky harbors, the intensity of light d feet below the surface is given by I= 1, e -0.28d where l, is the
intensity of light at the surface. What percentage of the surface light will reach a depth of
(A) 5 feet? (B) 10 feet?
.....
(A) The percentage of surface light at 5 feet is %.
(Round to the nearest percent as needed.)
Transcribed Image Text:Marine life is dependent upon the microscopic plant life that exists in the photic zone, a zone that goes to a depth where about 1% of the surface light remains. In some waters with a great deal of sediment, the photic zone may go down only 15 or 20 feet. In some murky harbors, the intensity of light d feet below the surface is given by I= 1, e -0.28d where l, is the intensity of light at the surface. What percentage of the surface light will reach a depth of (A) 5 feet? (B) 10 feet? ..... (A) The percentage of surface light at 5 feet is %. (Round to the nearest percent as needed.)
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