Average cost (AC), also known as average total cost (ATC), is the average cost per unit of output. To find it, divide the total cost (TC) by the quantity the firm is producing (Q).
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College fair? I really cant say based off the lack of context clues in the question and no additional information.
Answer: They live in the water and if there is toxic things in the water, the fish may die or eat it then die.
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