3) Michael faces tradeoffs between consuming in the current period when he is young
and consuming in a future period when he is old. Michael experiences a decrease in the
current interest rate he earns on his savings. Michael will save
a.less in the current period if the substitution effect is greater than the income effect.
b.less in the current period if the income effect is greater than the substitution effect.
c.more in the current period if the substitution effect is greater than the income effect.
d.more in the current period, regardless of the sizes of the income and substitution
effects.
4) Jamar used to work as an office manager, earning $40,000 per year. He gave up that
job to start a life-coaching business. In calculating the economic profit of his
life-coaching business, the $40,000 income that he gave up is counted as part of the
life-coaching business’s
a.total revenue.
b.opportunity costs.
c.explicit costs.
d.marginal costs.
5) The invisible hand directs economic activity through
a.advertising.
b.prices.
c.central planning.
d.government regulations.
6) Robin owns a horse stables and riding academy and gives riding lessons for children
at €pony camp.€ Her business operates in a competitive industry. Robin gives riding
lessons to 20 children per month. Her monthly total revenue is $4,000. The marginal
cost of pony camp is $250 per child. In order to maximize profits, Robin should
a.give riding lessons to more than 20 children per month.
b.give riding lessons to fewer than 20 children per month.
c.continue to give riding lessons to 20 children per month.
d.We do not have enough information to answer the question.