Answer:
48, - 132, 16, 21
Explanation:
Substitute the given values of x into f(x), that is
f(3) = 12(3) + 1 = 36 + 12 = 48
f(- 12) = 12(- 12) + 12 = - 144 + 12 = - 132
f() = 12() + 12 = 4 + 12 = 16
f() = 12() + 12 = 9 + 12 = 21
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