Final answer:
To evaluate the quadratic function f(x) = 4x^2 - 2x + 4 at x = -9, substitute -9 for x in the function and simplify the expression.
Step-by-step explanation:
To evaluate the quadratic function f(x) = 4x^2 - 2x + 4 at x = -9, we substitute -9 for x in the function:
f(-9) = 4(-9)^2 - 2(-9) + 4
= 4(81) + 18 + 4
= 324 + 18 + 4
= 346
Therefore, f(-9) = 346.