Algebra 2 (1st Edition)

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



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: $g(f(85))=g(85-15)=g(70)=0.9(70)=63.$
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