When preparing a presentation, you want to learn about the audience so that you can tailor your message accordingly. What factor
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<h2>Answer:</h2>
x = (log₅7) - 8
<h2>Explanation:</h2><em>Given;</em>
= 7
<em>Take log of both sides;</em>
log₁₀() = log₁₀7 -------------(ii)
<em>From the laws of logarithm remember that;</em>
logₐ xⁿ = n logₐ x
<em>Equation (ii) can then be written as;</em>
(x + 8)log₁₀5 = log₁₀7
<em>Divide both sides by log₁₀5</em>
(x + 8) = -----------(iii)
<em>From the laws of logarithm, remember that;</em>
<em>Equation (iii) can thus be written as;</em>
(x + 8) = log₅7
x + 8 = log₅7
<em>Make x subject of the formula;</em>
x = (log₅7) - 8