Explain your thinking, build the diagram and ask whenever something is unclear.

Dashed curves: starting demand and supply · E₀: starting equilibrium · Solid curves: your drawing. The baseline stays visible when you clear your curves.
Start with labelled axes. Add the curves you think this scenario needs.
Model units: baseline demand/MPB = 100 − bQ; supply/MPC = 10 + 0.7Q. Demand slope b is stated below. Build social or shifted curves from the scenario. Model feedback checks these illustrative equations.
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