Evaluate piecewise models - calculator-output interpretation
An energy audit cost model is \(f(x)=3x+2\) for \(x\le5\), and \(f(x)=2x+8\) for \(x>5\). Find \(f(3)\). Confirm the method before entering the value. Enter the requested value and choose the interpretation that matches the result.
Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.