18 An isotope of the element erbium has a half-life of approximately 9 hours. Initially there are 21 grams of theisotope present.a. Write the exponential function that relates the amount of substance remaining, A(t) measured in grams, asa function of t, measured in hours.A(t) =gramsb. Use part a. to determine the rate at which the substance is decaying after t hours.A'(t) =grams per hourc. Use part b. to determine the rate of decay at 14 hours. Round to four decimal places.A'(14)grams per hour%3DQuestion Help: M Message instructorAdd WorkSubmit Question

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An isotope of the element erbium has a half-life of approximately 9 hours. Initially there are 21 grams of the isotope present. a. Write the exponential function that relates the amount of substance remaining, A(t) measured in grams, as a function of t, measured in hours. A(t) = grams %3D b. Use part a. to determine the rate at which the substance is decaying after t hours. A'(t) = grams per hour %3D c. Use part b. to determine the rate of decay at 14 hours. Round to four decimal places. A'(14) = grams per hour %3D

An isotope of the element erbium has a half-life of approximately 9 hours. Initially there are 21 grams of the isotope present. a. Write the exponential function that relates the amount of substance remaining, A(t) measured in grams, as a function of t, measured in hours. A(t) = grams %3D b. Use part a. to determine the rate at which the substance is decaying after t hours. A'(t) = grams per hour %3D c. Use part b. to determine the rate of decay at 14 hours. Round to four decimal places. A'(14) = grams per hour %3D

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter6: Vector Spaces

Section6.7: Applications

Problem 13EQ

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