Answer
(a) $ t=\frac{\ln10}{5}$
(b) $ \frac{\ln 2}{5}$
Work Step by Step
(a) We have
$$10=e^{5t}\\
5t=\ln 10\\
t=\frac{\ln10}{5}$$
(b) The doubling time for $ P $ is given by $\frac{\ln 2}{k}=\frac{\ln 2}{5}$.
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 7 - Exponential Functions - 7.4 Exponential Growth and Decay - Exercises - Page 349: 2
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