Help with questions 1,4,5

N Which of the following costs are usually assumed to be fix rent on buildings utility bills wages and labor shipping costs The difference between a firm's total revenue and its total cost is economic profit operating margin. total cost is profit. measured different marginal return. marginal income. m' Zero economic profit is considered insufficient profit. a normal profit. an excess profit. a sign of diminishing marginal returns. A If hiring an additional worker will actually reduce total output, this is an example of negative marginal returns. positive marginal returns. increasing returns. diseconomies of scale. Gyeh of the toller The change in output from adding one additional worker is marginal utility. for out front marginal profit. marginal product. average product. 1200 DVDs for $150, what is the marginal