True/False

A marketing analyst is using the logarithmic equation log⁡x81=2\log_x 81 = 2 to determine a brand's reach factor xx. After converting the equation to its exponential form x2=81x^2 = 81, the analyst determines that x=9x = 9 is the only valid solution because the base of a logarithm must always be a positive number.

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Updated 2026-09-19

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Intermediate Algebra @ OpenStax

Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax

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