Answer
$63$
Work Step by Step
The first discount can be modeled by $f(x)=x-15$. The second discount can be modeled by $g(x)=0.9x$.
Here the first one is applied first, and $x=85$; hence we are looking for: $g(f(85))=g(85-15)=g(70)=0.9(70)=63.$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 6 Rational Exponents and Radical Functions - 6.3 Perform Function Operations and Composition - 6.3 Exercises - Problem Solving - Page 433: 45a
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