C
Select all that are true using f(x) = -3x - 21 (Choose 3)
Of(0) = -21 and f(3) = -30
Of(1) = -18 and f (4) = 33
Of (7) = -42 and f(-27) = 60
Of (30) = -111 and f(-12) = 15
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Of(2)=-27 and f(-5) = 36