An economy produces final goods and services with a market value of $5,000 billion in a given year,?

Question

But only $4,500 billion worth of goods and services is sold to domestic or foreign buyers. Is this nation’s GDP $5,000 billion or $4,500 billion? Explain your answer.

Answer 1

GDP is 5 Trillion

GDP = C +G+ (X-M)
You're concerned about (X-M), but this is only part of the GDP, and C digests the surplus of exports.