# Chapter 7 - Exponential and Logarithmic Functions - 7-3 Logarithmic Functions as Inverses - Practice and Problem-Solving Exercises - Page 457: 46

$2^7=128$

#### Work Step by Step

RECALL: $\log_{a}{y} = b \longleftrightarrow a^b = y$ Use the definition above to convert the equation to exponential equation and have $2^7=128.$

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