Bella can produce either a combination of 60 silk roses and 80 silk leaves or a combination of 70 silk roses and 55 silk leaves. If she now produces 60 silk roses and 80 silk leaves, what is the opportunity cost of producing an additional 10 silk roses?

If the savings rate in an economy is 30%, and the level of investment in the economy is $400, the GDP of the economy must be:

A) $1,900.25. B) $1,111.22. C) $1,333.33. D) $1,750.50.

The account that records the receipts from the exports of goods and services sold abroad, the payments for imports of goods and services from abroad, net interest income paid abroad, and net transfers is the ________

A) current account B) official settlements account C) international capital account D) capital and financial account