Answer
$ \gt 0$,
$\lt 0$
Work Step by Step
For the function $A=A_0e^{kt}$:
if $k \gt 0$, the function models the amount of a growing entity;
if $k \lt 0$, the function models the amount of a decaying entity.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 3 - Section 3.5 - Exponential Growth and Decay; Modeling Data - Concept and Vocabulary Check - Page 504: 1
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