A firm is producing 50 units of output at a total cost of $200 The firm's average fixed cost is $1 per unit.What is the firm's variable cost? Select one: 0 a. $50 0 b. $100 0 0. $150 0 d. $200 Suppose our federal government decides to reduce air pollution by reducing consumers' use of gas. In order to do this. they impose a tax on each gallon of gas sold. The tax will be more effective in reducing the use of gas by consumers it Select one: 0 a. demand isinelastic O b. demand is elastic O c. demand is perfectly inelastic 0 do all of the above