Final answer:
The value of (6)(x) when f(x) = -2x is -12x.
Step-by-step explanation:
To find (6)(x) when f(x) = -2x, we need to substitute the value of f(x) into the expression (6)(x). Since f(x) = -2x, we can substitute -2x into the expression to get (6)(-2x). Multiplying 6 and -2x gives us -12x.
Therefore, the answer is a) -12x.