If 10,000 people are willing to spend a maximum of $20 each to preserve one acre of rainforest, how many acres of rainforest could be preserved, assuming it costs $40 per acre to preserve the rainforest?

Refer to the table above. What is the marginal opportunity cost of transporting products to the market if the firm decides to choose factory Far over factory Very Far?

A) -$50 B) -$100 C) $50 D) $150

Assume that the medical screening industry is perfectly competitive. Consider a typical firm that is making short-run losses

Suppose the medical screening industry runs an effective advertising campaign which convinces a large number of people that yearly CT scans are critical for good health. How will this affect a typical firm that remains in the industry? A) The firm's marginal revenue curve and average cost curve shift upwards in response to the increase in market price and advertising expenditure. The firm increases output until it starts breaking even. B) The marginal revenue curve shifts upwards, the firm's output increases along its marginal cost curve, it expands production until it breaks even. C) The firm's supply curve shifts right and its marginal revenue curve shifts upwards as the market price rises and ultimately the firm starts making profits. D) The marginal revenue curve shifts upwards, the firm's output increases along its marginal cost curve, it expands production and eventually starts making profits.