Answer
Exponential function
Work Step by Step
An exponential function is represented by the form of $y=a {\times} b^{x}$.In this function $a=4$, $b=5$ and $x=x$ so this function is exponential.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 7 - Exponents and Exponential Functions - 7-6 Exponential Functions - Practice and Problem-Solving Exercises - Page 457: 10
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