If the tax on a good is increased from $1 per unit to $4 per unit, the deadweight loss from the tax increases by a factor of

Jill, an economics student, has already spent 5 hours cleaning her room. In deciding whether or not to continue cleaning for another hour, she applies the economic principle of

A) scarcity. B) ceteris paribus. C) choosing at the margin. D) productivity.

If a household's income falls from $26,000 to $24,000 and its saving falls from $1,000 to $500, then its _____

a. marginal propensity to consume is 0.98 b. marginal propensity to consume is 1.33 c. marginal propensity to consume is 0.25 d. marginal propensity to save is 0.02 e. marginal propensity to save is 0.25