1. If? ?a? ?profit-maximizing? ?firm? ?is? ?producing? ?an? ?output? ?level? ?in? ?which? ?marginal? ?revenue exceeds? ?marginal? ?cost,? ?should? ?it? ?produce? ?more,? ?less? ?or? ?the? ?same?
?2. ?If? ?a? ?profit-maximizing? ?firm? ?is? ?producing? ?an? ?output? ?level? ?in? ?which? ?marginal? ?revenue ?equals? ?marginal? ?cost,? ?then? ?is? ?this? ?firm? ?earning? ?a? ?profit?