Given the function, f(x) = 2x + 6, to evaluate f(4):
Substitute 4 as the input (x) value into the given function:
f(x) = 2x + 6
f(4) = 2(4) + 6
f(4) = 8 + 6
f(4) = 14
Therefore, f(4) = 14.
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