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3. If a substance y decays according to the equation = ky, where k is a constant and t is measured in dt hours. If the amount decreases from 40 grams to 10 grams in 2 hours, then the value of k is (A) -0.693 (В) —0.500 (С) 0.250 (D) -1.386 (E) -2.079

3. If a substance y decays according to the equation = ky, where k is a constant and t is measured in dt hours. If the amount decreases from 40 grams to 10 grams in 2 hours, then the value of k is (A) -0.693 (В) —0.500 (С) 0.250 (D) -1.386 (E) -2.079

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 15T
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= ky, where k is a constant and t is measured in dt dy If a substance y decays according to the equation 3. hours. If the amount decreases from 40 grams to 10 grams in 2 hours, then the value of k is (А) -0.693 (В) —0.500 (C) 0.250 (D) -1.386 (E) -2.079
Transcribed Image Text:= ky, where k is a constant and t is measured in dt dy If a substance y decays according to the equation 3. hours. If the amount decreases from 40 grams to 10 grams in 2 hours, then the value of k is (А) -0.693 (В) —0.500 (C) 0.250 (D) -1.386 (E) -2.079
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