Final answer:
To evaluate the function f(x) = -2x + 8 for x = -6, substitute -6 into the function to get f(-6) = 20.
Step-by-step explanation:
To evaluate the function f(x) = -2x + 8 for the given value of x = -6, we substitute -6 for x in the function: f(-6) = -2(-6) + 8.
Simplifying the expression, we have f(-6) = 12 + 8 = 20.
Therefore, when x = -6, f(x) = 20.
Learn more about Function Evaluation