(a) $f(8)= 4$ (b) $f(1)= -3$
Work Step by Step
RECALL: $f(a)$ represents the value of the function $f$ when $x=a$. Replace $x$ with the given value to obtain: (a) $f(8) = 8-4 \\f(8)= 4$ (b) $f(1) = 1 - 4 \\f(1)= -3$
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