f(x)=-x^2 + 2x -3
f(4) = -(4)^2 +2(4) -3
= -16+8-3
= -11 (B)
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f(x)=-x^2 + 2x -3
f(4) = -(4)^2 +2(4) -3
= -16+8-3
= -11 (B)