Answer
See below.
Work Step by Step
From the graph $f(3.5)=1.05$, which means that posting a letter weighing $3.5$ ounces costs $1.05$.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 2 - Functions and Graphs - Exercise Set 2.2 - Page 242: 96
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