If f (x) is defined as follows, find (a) f (-4). (b) f (O), and (c) f (1).

x²

if x<0

f (x) = { - 3

if x=0

2x+3 if x > 0

(a) f (-4) = (Simplify your answer.)

(b) f (0) = (Simplify your answer.)

(C) f (1) = (Simplify your answer.)

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