Answer
$y=-100$
Work Step by Step
The given function is
$\Rightarrow y=-4(5)^x$
Substitute $2$ for $x$.
$\Rightarrow y=-4(5)^2$
Evaluate the power.
$\Rightarrow y=-4\cdot 25$
Simplify.
$\Rightarrow y=-100$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 6 - Exponential Functions and Sequences - 6.3 - Exponential Functions - Exercises - Page 310: 17
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