Use function notation, evaluate functions on their domains, and interpret notation in context.
Evaluate a function at a given input by substitution
Problem
Evaluate \(f(x)=3x+2\) at \(x=4\).
Big Picture
What this problem is really about
Function evaluation means feeding the given input into the rule, not reporting the input itself. We’ll replace every occurrence of the variable with the supplied number, use parentheses to preserve the substitution, and then follow the original order of operations. The final value is the output paired with that input.
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