Skill 10 of 10 · Graphs and FunctionsClose

Evaluating functions

Evaluate a function by substituting a given input.

  • For f(x) = x² − 3x, f(−8) = (−8)² − 3(−8) = 88.

Question 1 of 4

What is the value of f(x) = 3x² + 4 when x = −3?

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