Table 1 Variable Total Marginal Output Cost Cost Cost $100 180 240 320 1. In Table 1, a) If fixed is $100, fill in the rest of Table 1. b) How much is total cost when output is 0? 2. A firm has total revenue of $15 million, fixed costs of $6 million, and variable costs of $8 million . What does the firm do (a) in the short run ? (b) in the long run