To evaluate the expression \( 6(x - 6) + 4 \) for \( x = 8 \), we will substitute \( 8 \) into the expression:
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Substitute \( x = 8 \):
\[ 6(8 - 6) + 4 \]
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Calculate \( 8 - 6 \):
\[ 8 - 6 = 2 \]
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Now the expression becomes:
\[ 6(2) + 4 \]
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Calculate \( 6 \times 2 \):
\[ 6 \times 2 = 12 \]
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Now add \( 4 \):
\[ 12 + 4 = 16 \]
Thus, the value of the expression when \( x = 8 \) is \( 16 \). Therefore, the correct answer is:
C. 16