Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 12 - Section 12.3 - Exponential Functions - Exercise Set - Page 863: 56


The given function is an exponential function.

Work Step by Step

An exponential function, as explained in the beginning of the section, is a function of the form: $f(x)=b^x$ Where $b$ is greater than 0, $b$ is not 1, and $x$ is a real number. The given function $F(x) = 0.4^{x+1}$ can be expressed as $F(x) = 0.4\times0.4^{x}$. We can see that the function is in the form $f(x)=a\times b^x$ where $b=0.4$. Thus, the function is an exponential function.
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