From the graph, calculate the following:

9.1. At P = R80, the profit maximising output in the short run (1)

9.2. At P = R80, how much profit is made in the short run (1)

9.3. How many units of output the firm will plan to produce in the long run if it expects R80

to be the long-run price (1)

9.4. The level of output at which the firm will be forced to operate as the competitive

industry, not just the firm in question, moves towards long-run equilibrium (1)

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