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Mark Mega Beans Market Booming Berries That is correct! Booming Berries Booming Berries 130 Econ 120 Mentor 110 Do you have an estimate of this 100 external marginal cost? 90 80 Clare 70 Price (per pound) 60 Yes, I have estimated that the external marginal cost is $20 per 40 each thousand pounds of Booming Berries. Mark 30 20 Wow, okay - so, if we wanted to 10 account for this external marginal cost 10 20 30 40 50 60 70 80 90 100 110 120 in the competitive Booming Quantity (in thousands) Clare Berries market, would this affect the demand or supply curve? The demand curve The supply curve Submit