To find the value of \( f(-8) \) using the function \( f(x) = -6(1 - x) \), we will substitute \( -8 \) for \( x \).
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Substitute \( -8 \) into the function: \[ f(-8) = -6(1 - (-8)) \]
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Simplify the expression inside the parentheses: \[ 1 - (-8) = 1 + 8 = 9 \]
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Now, substitute \( 9 \) back into the function: \[ f(-8) = -6(9) \]
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Finally, multiply: \[ f(-8) = -54 \]
Thus, the value of \( f(-8) \) is \(-54\).