Cassie produces and sells 400 jars of homemade jelly each month for $3 each. Each month, she pays $200 for jars, $150 for ingredients, and uses her own time, with an opportunity cost of $300 . Her economic profits each month are:

Which of the following pairs of goods would be considered complementary?

a. Coca-Cola and Pepsi. b. Computers and computer software. c. Radios and televisions. d. Mass transit and private automobiles. e. Compact discs and cassette tapes.

Which of the following is true of a net debtor nation?

a. It experiences a trade surplus for five consecutive years. b. It experiences a trade deficit for five consecutive years. c. It owes more to the rest of the world than it is owed. d. It owes less to the rest of the world than it is owed. e. It experiences persistent current account surplus.