Answer
a) -1
b) -1/3
Work Step by Step
a) $r(3)=3-\frac{1}{3}\times3=3-1=2$
$r(6)=3-\frac{1}{3}\times6=3-2=1$
$r(6)-r(3)=1-2=-1$
b) $\frac{1-2}{6-3}=-1/3$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 2 - Section 2.4 - Average Rate of Change of a Function - 2.4 Exercises - Page 188: 12
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