Answer
$1-\ln{5}=x.$
Work Step by Step
Since $e^{1-x}=5$, after taking $\ln$ of both sides: $\ln{e^{1-x}}=\ln{5}\\1-x=\ln{5}\\1=x+\ln{5}\\1-\ln{5}=x.$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 5 - Exponential and Logarithmic Functions - Chapter Review - Review Exercises - Page 346: 43
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
