Answer:
14
Step-by-step explanation:
f(-2) = 3(-2)² + 1 = 3(4) + 1 = 12 + 1 = 13
x=2
x^3=8
x=2 (take the cubed root of both sides)
This can be solved by adding 8 to both sides, then taking the cubed root of both sides
positive = greater than 0.
Therefore we have the inequality:
|add 7 to both sides
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