$f (x) = \frac{1}{2} x + \frac{3}{4} x$ find $f (8)$

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Solution

$f (x) = \frac{1}{2} x + \frac{3}{4} x$

$f (8) = \frac{1}{2} (4) + \frac{3}{4} (8) f (8) = 2 + 6 = 8$

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