Answer:
-8
Step-by-step explanation:
Put the given values where the corresponding variables are, and do the arithmetic.
__
first function
f(x) = 12 -3x
f(5) = 12 -3(5) = -3
__
second function
j(x) = x² +4x -1 = (x +4)x -1
j(-2) = (-2 +4)(-2) -1 = 2(-2) -1 = -5
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composition
f(5) +j(-2) = -3 +(-5) = -8
