Answer:
f(3) = 0
Step-by-step explanation:
Plug in 3 for x:
f(x) = x - 3
f(3) = (3) - 3
Simplify. Combine like terms:
f(3) = 3 - 3 = 0
f(3) = 0 is your answer.
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0
f (x) = x-3,
Let x = 3
f (3)= 3-3
= 0
