College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 4 - Section 4.2 - Exponential Functions - 4.2 Exercises: 107

Answer

$f(x)=2^x$

Work Step by Step

First, we have to find the function, by calculating the constant, $a$. If the function contains this point (3,8), then $f(3)=8$, this means: $a^3=8$ We take the cube root of both sides : $a=2$ Therefore, with $a=2$ the function is: $f(x)=2^x$.
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