Answer
$0.4$
Work Step by Step
The average resistance to happiness at age 30 is, $R=4.6-0.02(30)=4$.
The average resistance to happiness at age 50 is, $R=4.6-0.02(50)=3.6$
The difference is $4-3.6=0.4$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 1 - Section 1.1 - Algebraic Expressions, Real Numbers, and Interval Notation - Exercise Set - Page 14: 91
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