If the marginal tax rate is less than the average tax rate, the tax system is

Winnie's Car Wash is a perfectly competitive firm. The table above shows Winnie's total product schedule. If the price of a car wash is $4, and Winnie maximizes his profit when he employs 3 workers, the wage rate is

A) $25 per day. B) $30 per day. C) $70 per day. D) $50 per day.

Employers verify the facts of potential employees' resumes to avoid

A) signaling. B) screening. C) cheap talk. D) moral hazard.