In a small, closed economy, national income (GDP) is $ 500.00 million for the current month. Individuals have spent $ 300.00 million on the consumption of goods and services. They have paid a total of $ 200.00 million in taxes, and the government has spent $ 150.00 million on goods and services this month. Use this information and the national income identity to answer the questions. How much is spent on investment in this economy?