The Cost-Volume-Profit Modeler

Build a cost-volume-profit model so I can see how profit responds to
changes.

Baseline: price [AMOUNT], variable cost/unit [AMOUNT], fixed costs
[AMOUNT], current volume [UNITS]
Scenarios I care about: [E.G. PRICE CUT TO WIN VOLUME, COST INCREASE,
FIXED-COST INVESTMENT]

Produce:
1. Baseline profit and contribution margin
2. Profit under each scenario, with the volume change needed to break
   even on the decision
3. The operating leverage — how a 10% change in sales changes profit
4. A simple table showing profit across a range of volumes
5. A recommendation on which scenario is most robust to being wrong

Explain operating leverage in one line so I understand why it matters here.