The student center on campus has burritos, bagels, or burgers for lunch, and they all cost
the same. You love burgers and bagels, but you decide to have a burger today. If they
were out of burgers, you would have bought a bagel. This statement best represents this
economic concept:-
A) The real cost of something is what you must give up to get it.
B) "How much" is a decision at the margin.
C) Resources are used to produce something else.
D) There are gains from trade.

The following pertains to smoke, inc.’s investment in debt securities: on december 31, year 3, smoke reclassified a security acquired during the year for $70,000. it had a $50,000 fair value when it was reclassified from trading to available-for-sale. an available-for-sale security costing $75,000, written down to $30,000 in year 2 because of an other-than-temporary impairment of fair value, had a $60,000 fair value on december 31, year 3. what is the net effect of the above items on smoke’s net income for the year ended december 31, year 3?

Xinhong company is considering replacing one of its manufacturing machines. the machine has a book value of $39,000 and a remaining useful life of 5 years, at which time its salvage value will be zero. it has a current market value of $49,000. variable manufacturing costs are $33,300 per year for this machine. information on two alternative replacement machines follows. alternative a alternative b cost $ 115,000 $ 117,000 variable manufacturing costs per year 22,900 10,100 1. calculate the total change in net income if alternative a and b is adopted. 2. should xinhong keep or replace its manufacturing machine

Which of the following is one disadvantage of renting a place to live compared to buying a home? a. tenants have to pay for all repairs to the building. b. the landlord covers the expenses of maintaining the property. c. residents can't alter their living space without permission. d. rent is generally more than monthly mortgage payments.