Ana is training for a triathlon, a timed race that combines swimming, biking, and running. While Ana usually practices swimming for two hours per day, she decides to continue for an additional hour because the pool is less crowded than usual today allowing her practice time to be more productive. Which basic principle of individual choice does Valerie's plan illustrate that her husband's advice does not? a. Resources are scarce.
b. All decisions involve opportunity costs.
c. Decisions are made at the margin.
d. People usually exploit opportunities to make themselves better off.

Problem 9-5. net present value and taxes [lo 1, 2] penguin productions is evaluating a film project. the president of penguin estimates that the film will cost $20,000,000 to produce. in its first year, the film is expected to generate $16,500,000 in net revenue, after which the film will be released to video. video is expected to generate $10,000,000 in net revenue in its first year, $2,500,000 in its second year, and $1,000,000 in its third year. for tax purposes, amortization of the cost of the film will be $12,000,000 in year 1 and $8,000,000 in year 2. the company’s tax rate is 35 percent, and the company requires a 12 percent rate of return on its films. required what is the net present value of the film project? to simplify, assume that all outlays to produce the film occur at time 0. should the company produce the film?

What should a food worker use to retrieve ice from an ice machine?

Rats that received electric shocks were unlikely to develop ulcers if the